Update logdog butler (cipd_package) to new revision.

For some bots, the git_revision of cipd_package is pinned to a
very old version (summer 2016). This causes issues when trying to
communicate with other systems expecting a newer version, and leads
to issues like:
Failed to start logdog: Missing project [LOGDOG_STREAM_PROJECT]

This CL updates the pinned revision number to a newer version,
suggested in the linked bug.

A better fix would probably be to pin this in a shared location,
making it simple to update all these at the same time, instead
of specifiying it once per target.

This CL was generated by running the following script:
git grep -l -e \
  'git_revision:3ff24775a900b675866fbcacf2a8f98a18b2a16a' \
  -- "*.json" | \
  xargs sed -ie \
    's/git_revision:3ff24775a900b675866fbcacf2a8f98a18b2a16a/git_revision:25755a2c316937ee44a6432163dc5e2f9c85cf58/'

BUG=670817

Review-Url: https://codereview.chromium.org/2574563002
Cr-Commit-Position: refs/heads/master@{#438005}

testing/buildbot/chromium.fyi.json

@@ -1586,7 +1586,7 @@
             {
               "cipd_package": "infra/tools/luci/logdog/butler/${platform}",
               "location": "bin",
-              "revision": "git_revision:3ff24775a900b675866fbcacf2a8f98a18b2a16a"
+              "revision": "git_revision:25755a2c316937ee44a6432163dc5e2f9c85cf58"
             }
           ],
           "dimension_sets": [
@@ -1618,7 +1618,7 @@
             {
               "cipd_package": "infra/tools/luci/logdog/butler/${platform}",
               "location": "bin",
-              "revision": "git_revision:3ff24775a900b675866fbcacf2a8f98a18b2a16a"
+              "revision": "git_revision:25755a2c316937ee44a6432163dc5e2f9c85cf58"
             }
           ],
           "dimension_sets": [

testing/buildbot/chromium.gpu.fyi.json

@@ -11,7 +11,7 @@
             {
               "cipd_package": "infra/tools/luci/logdog/butler/${platform}",
               "location": "bin",
-              "revision": "git_revision:3ff24775a900b675866fbcacf2a8f98a18b2a16a"
+              "revision": "git_revision:25755a2c316937ee44a6432163dc5e2f9c85cf58"
             }
           ],
           "dimension_sets": [
@@ -42,7 +42,7 @@
             {
               "cipd_package": "infra/tools/luci/logdog/butler/${platform}",
               "location": "bin",
-              "revision": "git_revision:3ff24775a900b675866fbcacf2a8f98a18b2a16a"
+              "revision": "git_revision:25755a2c316937ee44a6432163dc5e2f9c85cf58"
             }
           ],
           "dimension_sets": [
@@ -73,7 +73,7 @@
             {
               "cipd_package": "infra/tools/luci/logdog/butler/${platform}",
               "location": "bin",
-              "revision": "git_revision:3ff24775a900b675866fbcacf2a8f98a18b2a16a"
+              "revision": "git_revision:25755a2c316937ee44a6432163dc5e2f9c85cf58"
             }
           ],
           "dimension_sets": [
@@ -364,7 +364,7 @@
             {
               "cipd_package": "infra/tools/luci/logdog/butler/${platform}",
               "location": "bin",
-              "revision": "git_revision:3ff24775a900b675866fbcacf2a8f98a18b2a16a"
+              "revision": "git_revision:25755a2c316937ee44a6432163dc5e2f9c85cf58"
             }
           ],
           "dimension_sets": [
@@ -395,7 +395,7 @@
             {
               "cipd_package": "infra/tools/luci/logdog/butler/${platform}",
               "location": "bin",
-              "revision": "git_revision:3ff24775a900b675866fbcacf2a8f98a18b2a16a"
+              "revision": "git_revision:25755a2c316937ee44a6432163dc5e2f9c85cf58"
             }
           ],
           "dimension_sets": [
@@ -426,7 +426,7 @@
             {
               "cipd_package": "infra/tools/luci/logdog/butler/${platform}",
               "location": "bin",
-              "revision": "git_revision:3ff24775a900b675866fbcacf2a8f98a18b2a16a"
+              "revision": "git_revision:25755a2c316937ee44a6432163dc5e2f9c85cf58"
             }
           ],
           "dimension_sets": [
@@ -713,7 +713,7 @@
             {
               "cipd_package": "infra/tools/luci/logdog/butler/${platform}",
               "location": "bin",
-              "revision": "git_revision:3ff24775a900b675866fbcacf2a8f98a18b2a16a"
+              "revision": "git_revision:25755a2c316937ee44a6432163dc5e2f9c85cf58"
             }
           ],
           "dimension_sets": [
@@ -744,7 +744,7 @@
             {
               "cipd_package": "infra/tools/luci/logdog/butler/${platform}",
               "location": "bin",
-              "revision": "git_revision:3ff24775a900b675866fbcacf2a8f98a18b2a16a"
+              "revision": "git_revision:25755a2c316937ee44a6432163dc5e2f9c85cf58"
             }
           ],
           "dimension_sets": [
@@ -775,7 +775,7 @@
             {
               "cipd_package": "infra/tools/luci/logdog/butler/${platform}",
               "location": "bin",
-              "revision": "git_revision:3ff24775a900b675866fbcacf2a8f98a18b2a16a"
+              "revision": "git_revision:25755a2c316937ee44a6432163dc5e2f9c85cf58"
             }
           ],
           "dimension_sets": [
@@ -806,7 +806,7 @@
             {
               "cipd_package": "infra/tools/luci/logdog/butler/${platform}",
               "location": "bin",
-              "revision": "git_revision:3ff24775a900b675866fbcacf2a8f98a18b2a16a"
+              "revision": "git_revision:25755a2c316937ee44a6432163dc5e2f9c85cf58"
             }
           ],
           "dimension_sets": [
@@ -1093,7 +1093,7 @@
             {
               "cipd_package": "infra/tools/luci/logdog/butler/${platform}",
               "location": "bin",
-              "revision": "git_revision:3ff24775a900b675866fbcacf2a8f98a18b2a16a"
+              "revision": "git_revision:25755a2c316937ee44a6432163dc5e2f9c85cf58"
             }
           ],
           "dimension_sets": [
@@ -1124,7 +1124,7 @@
             {
               "cipd_package": "infra/tools/luci/logdog/butler/${platform}",
               "location": "bin",
-              "revision": "git_revision:3ff24775a900b675866fbcacf2a8f98a18b2a16a"
+              "revision": "git_revision:25755a2c316937ee44a6432163dc5e2f9c85cf58"
             }
           ],
           "dimension_sets": [
@@ -1155,7 +1155,7 @@
             {
               "cipd_package": "infra/tools/luci/logdog/butler/${platform}",
               "location": "bin",
-              "revision": "git_revision:3ff24775a900b675866fbcacf2a8f98a18b2a16a"
+              "revision": "git_revision:25755a2c316937ee44a6432163dc5e2f9c85cf58"
             }
           ],
           "dimension_sets": [
@@ -1442,7 +1442,7 @@
             {
               "cipd_package": "infra/tools/luci/logdog/butler/${platform}",
               "location": "bin",
-              "revision": "git_revision:3ff24775a900b675866fbcacf2a8f98a18b2a16a"
+              "revision": "git_revision:25755a2c316937ee44a6432163dc5e2f9c85cf58"
             }
           ],
           "dimension_sets": [
@@ -1473,7 +1473,7 @@
             {
               "cipd_package": "infra/tools/luci/logdog/butler/${platform}",
               "location": "bin",
-              "revision": "git_revision:3ff24775a900b675866fbcacf2a8f98a18b2a16a"
+              "revision": "git_revision:25755a2c316937ee44a6432163dc5e2f9c85cf58"
             }
           ],
           "dimension_sets": [
@@ -1504,7 +1504,7 @@
             {
               "cipd_package": "infra/tools/luci/logdog/butler/${platform}",
               "location": "bin",
-              "revision": "git_revision:3ff24775a900b675866fbcacf2a8f98a18b2a16a"
+              "revision": "git_revision:25755a2c316937ee44a6432163dc5e2f9c85cf58"
             }
           ],
           "dimension_sets": [