Update application version to latest version from networkservicemesh/…

…cmd-nse-icmp-responder-vpp@master networkservicemesh/cmd-nse-icmp-responder-vpp#58

networkservicemesh/cmd-nse-icmp-responder-vpp PR link: networkservicemesh/cmd-nse-icmp-responder-vpp#58

networkservicemesh/cmd-nse-icmp-responder-vpp commit message:
commit 57ee2518240be817fcc58a37ab746e81a70c4fd2
Author: Network Service Mesh Bot <60070799+nsmbot@users.noreply.github.com>
Date:   Sat Apr 3 12:07:41 2021 -0500

    Merge 03e55ca64c5a8ee2b859ce2d270356acab9e97bb into 099a01d1a039c125d18f73b3908d1c70031bb1dd

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:f6fe233c
+          image: networkservicemeshci/cmd-nse-icmp-responder-vpp:57ee2518
           imagePullPolicy: IfNotPresent
           env:
             - name: SPIFFE_ENDPOINT_SOCKET