Update application version to latest version from networkservicemesh/…

…cmd-nse-icmp-responder-vpp@master networkservicemesh/cmd-nse-icmp-responder-vpp#15

networkservicemesh/cmd-nse-icmp-responder-vpp PR link: networkservicemesh/cmd-nse-icmp-responder-vpp#15

networkservicemesh/cmd-nse-icmp-responder-vpp commit message:
commit 859b25c2d7eea14db8a9beb388cc422cb8e13b09
Author: Network Service Mesh Bot <60070799+nsmbot@users.noreply.github.com>
Date:   Wed Feb 24 10:56:34 2021 -0600

    Merge 62b33d4e931f878f93ecb356632467c5f2143e17 into 11a253ac5b72aef859e20a93775817ca2cd76c9e

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

apps/nse-memif/nse.yaml

@@ -16,7 +16,7 @@ spec:
     spec:
       containers:
         - name: nse
-          image: networkservicemeshci/cmd-nse-icmp-responder-vpp:81bd3e61
+          image: networkservicemeshci/cmd-nse-icmp-responder-vpp:859b25c2
           imagePullPolicy: IfNotPresent
           env:
             - name: SPIFFE_ENDPOINT_SOCKET