Touch ups to LUCI services configuration.

These changes simplify migrating to starlark by removing spurious diffs
from the semantic diff.

The name in the hand-written project.cfg doesn't appear to actually be
used. In lucicfg, the parameter that populates the name field in the
generated project.cfg is used for creating the fully-qualified names of
the form <project>/<bucket>/<builder> where the actual value is only
<builder> or <bucket>/<builder>.

The repo field in the gitiles field of the trigger field doesn't require
the .git suffix and the normalized value when computing the semantic
diff omits it. In lucicfg, the parameter that populates the field
disallows the .git suffix.

Change-Id: Id26647e72cbdb2c7f913ab608273ccc032e14d55
Bug: 1011908
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1836002
Commit-Queue: Garrett Beaty <gbeaty@chromium.org>
Reviewed-by: Aaron Gable <agable@chromium.org>
Cr-Commit-Position: refs/heads/master@{#703376}

infra/config/luci-scheduler.cfg

@@ -56,7 +56,7 @@ trigger {
   acl_sets: "default"
 
   gitiles: {
-    repo: "https://chromium.googlesource.com/chromium/src.git"
+    repo: "https://chromium.googlesource.com/chromium/src"
     refs: "refs/heads/master"
   }
 

infra/config/project.cfg

 # For the schema of this file and documentation, see ProjectCfg message in
 # https://luci-config.appspot.com/schemas/projects:project.cfg
 
-name: "Chromium browser"
+name: "chromium"
 access: "group:all" # public