Bug 2368: MD-SAL FRM may update/remove unexpected flow entries.

FRM should always set strict flag into update-flow/remove-flow
RPC input.

Change-Id: I6027442b56f4cd93cfc3f954dc8501bb57e2d64a
Signed-off-by: Shigeru Yasuda <s-yasuda@da.jp.nec.com>