Bug-1978:Leader initializes commit index to last index

Change-Id: Ic42a14911e8ff4db40fde2a917c8cb2edf412c76
Signed-off-by: Kamal Rameshan <kramesha@cisco.com>
Signed-off-by: Moiz Raja <moraja@cisco.com>
Merge "Bug-1978:Leader initializes commit index to last index"