Update application version to latest version from networkservicemesh/…

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

networkservicemesh/cmd-nsmgr PR link: https://github.com/networkservicemesh/cmd-nsmgr/pull/

networkservicemesh/cmd-nsmgr commit message:
commit a0a71100347242fa49308e8a44288e53399acb1a
Author: Network Service Mesh Bot <60070799+nsmbot@users.noreply.github.com>
Date:   Tue Apr 13 10:45:47 2021 -0500

    Sync files with networkservicemesh/cmd-template

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

apps/nsmgr/nsmgr.yaml

@@ -15,7 +15,7 @@ spec:
         app: nsmgr
     spec:
       containers:
-        - image: networkservicemeshci/cmd-nsmgr:8579705c
+        - image: networkservicemeshci/cmd-nsmgr:a0a71100
           imagePullPolicy: IfNotPresent
           name: nsmgr
           ports: