Code Changes includes:
 1.Sychronizer for ceilometer service.
 2.Added files:
   i.xos/synchronizer/steps/sync_ceilometerservice.py(Ceilometer sychronizer )
   ii.xos/synchronizer/steps/sync_ceilometerservice.yaml(Ansible yaml file which will be run as part of sychronizer)
   iii.xos/synchronizer/templates/update-keystone-endpoints.py.j2 (to change endpoints in keystone)
 3.Modified init script of ceilometer service image for starting pub-sub module
 4. [api] default_api_return_limit = 1000 in README and ceilometer.conf.j2 for both mitaka-v2 and mitaka-v3

Change-Id: I2ab935c2fc507a00729d14cf87bae81990b75ed9
diff --git a/xos/synchronizer/ceilometer/ceilometer_service_custom_image/mitaka-v3/templates/ceilometer.conf.j2 b/xos/synchronizer/ceilometer/ceilometer_service_custom_image/mitaka-v3/templates/ceilometer.conf.j2
index b89a3d9..6deb9a4 100644
--- a/xos/synchronizer/ceilometer/ceilometer_service_custom_image/mitaka-v3/templates/ceilometer.conf.j2
+++ b/xos/synchronizer/ceilometer/ceilometer_service_custom_image/mitaka-v3/templates/ceilometer.conf.j2
@@ -958,3 +958,6 @@
 password = password
 interface = internalURL
 region_name = RegionOne
+
+[api]
+default_api_return_limit = 1000