Update application version to latest version from networkservicemesh/…

…cmd-nse-icmp-responder-vpp@master networkservicemesh/cmd-nse-icmp-responder-vpp#6

networkservicemesh/cmd-nse-icmp-responder-vpp PR link: networkservicemesh/cmd-nse-icmp-responder-vpp#6

networkservicemesh/cmd-nse-icmp-responder-vpp commit message:
commit af69f91c293c731d7fb0236f3c04b542c6e8bedd
Author: Network Service Mesh Bot <60070799+nsmbot@users.noreply.github.com>
Date:   Tue Feb 16 03:58:05 2021 -0600

    Merge dbcf7ea9852dc7130dd94120fab5ff35a0be4c66 into d20422617b57d21953ebf4b1886ae557143c24e6

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:cbc42bad
+          image: networkservicemeshci/cmd-nse-icmp-responder-vpp:af69f91c
           imagePullPolicy: IfNotPresent
           env:
             - name: SPIFFE_ENDPOINT_SOCKET