Extra superfluous edit-config RPC sent

Extra superfluous edit-config RPC sent

Extra superfluous edit-config RPC sent just prior to correct edit-config
RPC for top-level lists POST & PUT to certain top-level lists in a
mounted device's model returns a 500 error via Restconf, although in
some cases (device-dependent) the config appears to have committed.

This problem first appeared in Boron-SR3, and continues in Carbon SR-1.

JIRA: NETCONF-482

Signed-off-by: Jamo Luhrsen <jluhrsen@gmail.com>
Change-Id: I718bda377245d884864e160f2566e7c3d8e62e47
(cherry picked from commit 371f6acfd6cf89319ecbffeb0259e2ce13d32405)