Ganglia service does not require restart after changing configs

STR:
1) Deploy 3-node cluster.
2) Change config "Ganglia rrdcached base directory" in General tab and save changes.

Expected result:

• Ganglia service require restart (restart indicator present)

Actual result:

• Ganglia restart indicator does NOT present.
• "stale_configs" value on GANGLIA_MONITOR and GANGLIA-SERVER API is "false".