Fix gerrit entrypoint error

REINDEX_AT_STARTUP variable is used by the gerrit entrypoint to decide
whether to force a reindex.

This is only needed by master2 in the dual-master recipe, however the
variable should be still set to false for all other master installations
so that the entrypoint won't raise the following error:

/bin/entrypoint.sh: line 35: [: ==: unary operator expected

Bug: Issue 13703
Change-Id: I88ffdad29af5137bdb9a612642b5fe45f3b94204
diff --git a/master-slave/cf-service-master.yml b/master-slave/cf-service-master.yml
index f1e7e95..e4060f2 100644
--- a/master-slave/cf-service-master.yml
+++ b/master-slave/cf-service-master.yml
@@ -267,6 +267,8 @@
                       Value: !Ref SlaveSubdomain
                     - Name: HOSTED_ZONE_NAME
                       Value: !Ref HostedZoneName
+                    - Name: REINDEX_AT_STARTUP
+                      Value: false
                     - Name: METRICS_CLOUDWATCH_ENABLED
                       Value: !Ref MetricsCloudwatchEnabled
                     - Name: METRICS_CLOUDWATCH_NAMESPACE
diff --git a/single-master/cf-service.yml b/single-master/cf-service.yml
index fcfe842..7302e6a 100644
--- a/single-master/cf-service.yml
+++ b/single-master/cf-service.yml
@@ -213,6 +213,8 @@
                       Value: !Ref AWS::Region
                     - Name: GERRIT_KEY_PREFIX
                       Value: !Ref GerritKeyPrefix
+                    - Name: REINDEX_AT_STARTUP
+                      Value: false
                     - Name: GERRIT_HEAP_LIMIT
                       Value: !Ref GerritHeapLimit
                     - Name: JGIT_CACHE_SIZE