Update application version to latest version from networkservicemesh/…

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

networkservicemesh/cmd-nse-icmp-responder PR link: https://github.com/networkservicemesh/cmd-nse-icmp-responder/pull/

networkservicemesh/cmd-nse-icmp-responder commit message:
commit dfdfd1c62a294dab12a0c2ddc6383107462a4306
Author: Denis Tingaikin <49399980+denis-tingaikin@users.noreply.github.com>
Date:   Thu Mar 25 16:49:17 2021 +0700

    Merge pull request #117 from artem-belov/pr-payload-env

    NS payload from environment

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

apps/nse-kernel/nse.yaml

@@ -16,7 +16,7 @@ spec:
     spec:
       containers:
         - name: nse
-          image: networkservicemeshci/cmd-nse-icmp-responder:e1cd12da
+          image: networkservicemeshci/cmd-nse-icmp-responder:dfdfd1c6
           imagePullPolicy: IfNotPresent
           env:
             - name: SPIFFE_ENDPOINT_SOCKET