Docserver: Fix API refresh task names

So these tasks have been queueing with different path names than
those used by the template processor. The latter uses "Unix name"
equivalents of the API features, while the former was not.

For example, "apps/appviewTag" has been caching as such but the
template looks for "apps/appview_tag". It's unclear when this
incongruity appeared but it explains several "my-docs-arent-updating"
bugs that have appeared in the past several weeks.

This changes the refresh servlet to queue API refresh tasks using
API features in unix_name form, resolving the incongruity.

BUG=471019
TBR=kalman@chromium.org

Review URL: https://codereview.chromium.org/1038993002

Cr-Commit-Position: refs/heads/master@{#322496}

chrome/common/extensions/docs/server2/api_data_source.py

@@ -11,6 +11,7 @@ from file_system import FileNotFoundError
 from future import Future, All
 from jsc_view import CreateJSCView, GetEventByNameFromEvents
 from platform_util import GetPlatforms
+from third_party.json_schema_compiler.model import UnixName
 
 
 class APIDataSource(DataSource):
@@ -87,7 +88,7 @@ class APIDataSource(DataSource):
   def GetRefreshPaths(self):
     tasks = []
     for platform in GetPlatforms():
-      tasks += ['%s/%s' % (platform, api)
+      tasks += ['%s/%s' % (platform, UnixName(api))
                 for api in
                     self._platform_bundle.GetAPIModels(platform).GetNames()]
     return tasks

chrome/common/extensions/docs/server2/app.yaml

 application: chrome-apps-doc
-version: 3-48-0
+version: 3-48-2
 runtime: python27
 api_version: 1
 threadsafe: false

chrome/common/extensions/docs/server2/cron.yaml

@@ -2,4 +2,4 @@ cron:
 - description: Repopulates all cached data.
   url: /_cron
   schedule: every 180 minutes
-  target: 3-48-0
+  target: 3-48-2

chrome/common/extensions/docs/server2/queue.yaml

 queue:
   - name: default
-    rate: 7/s
-    bucket_size: 7
-    max_concurrent_requests: 7
+    rate: 4/s
+    bucket_size: 4
+    max_concurrent_requests: 4