Fix Bug 1974: No.Of Hours Value for the running instances is hidden in Dashboard

		- No.Of Hours Value for the running instances will be visible in Dashboard Instance graph
		- Changed the metrics error message
		- Changed the font size of mandatory field message.

Change-Id: If6b62d645ba10a38fb969ed189d7e7a5ce2d45a5
Signed-off-by: SANDHYA.JS <sandhya.j@tataelxsi.co.in>