Update application version to latest version from networkservicemesh/…

…cmd-nsmgr@master networkservicemesh/cmd-nsmgr#180

networkservicemesh/cmd-nsmgr PR link: networkservicemesh/cmd-nsmgr#180

networkservicemesh/cmd-nsmgr commit message:
commit a981ff2a21bf6a7d0a8360cad922ab4e430504d9
Author: Network Service Mesh Bot <60070799+nsmbot@users.noreply.github.com>
Date:   Mon Feb 8 03:29:55 2021 -0600

    Merge 8a9020e96c265bb8d99c58efefebad14e79cf75f into d616702ff548c078e5b058cefd62214a88a026a9

Signed-off-by: NSMBot <nsmbot@networkservicmesh.io>

apps/nsmgr/nsmgr.yaml

@@ -15,7 +15,7 @@ spec:
         app: nsmgr
     spec:
       containers:
-        - image: networkservicemeshci/cmd-nsmgr:3fe1daca
+        - image: networkservicemeshci/cmd-nsmgr:a981ff2a
           imagePullPolicy: IfNotPresent
           name: nsmgr
           ports: