Feature 11009 Ns Config Template as first class citizens in OSM

        - Added UI support
	- Added New page for NS config template under packages section
	- User can create, edit & delete template
	- Added template field under ns instance

Change-Id: I3e9a895b4415165d6c96b9840dee64cc197b40e4
Signed-off-by: SANDHYA.JS <sandhya.j@tataelxsi.co.in>