[BUGFIX] Rename the renamed Undeploy Policy Keyword

[BUGFIX] Rename the renamed Undeploy Policy Keyword

The keyward has been renamed last week []
Unfortunately this Keyword is not used only for the vFWCL
it is also used for a healthcheck (Enhanced Policy)

Since it has been merged and cherry-picked, the Healthcheck is
failing on master (12/12) and in Guilin (15/12)

This patch revert the Name to keep generic
and reference the generic name in the vFW CL test

Issue-ID: INT-1811

Signed-off-by: mrichomme <morgan.richomme@orange.com>
Change-Id: I3cf0836e8b79f88be1dfb3d655a8e925c934def8