Correct VIM Status Check

With the change in the osmclient output, the check for processing
state no longer works.  This code was introduced in master and has
shown to be more resilient to changes in the osmclient.

Change-Id: I91687866182e03124698d9fca3dd2d07100f06e0
Signed-off-by: beierlm <mark.beierl@canonical.com>