Sync-datasources only on datasource nodes
Sync-datasources only on datasource nodes

Fixes the problem that datasources are created and
sync'ed an non-datasource nodes.

Closes-Bug: 1612008

Change-Id: I2fdbf4c75d9cd75cb9bf7893504dbfb13448c9c3

ramineni/my_congress,ramineni/my_congress,openstack/congress,ramineni/my_congress,openstack/congress,ramineni/my_congress