CBG-1119 Fix intermittent failure in TestChangesActiveOnlyWithLimitLowRevCache
CBG-1119 Fix intermittent failure in TestChangesActiveOnlyWithLimitLowRevCache

* CBG-1119 Fix intermittent failure in TestChangesActiveOnlyWithLimitLowRevCache

* CBG-1119 Add WaitForChanges to wait for changes after any doc updates
couchbaselabs/sync_gateway,couchbaselabs/sync_gateway,couchbaselabs/sync_gateway,couchbaselabs/sync_gateway