Update application version to latest version from networkservicemesh/…

…cmd-nsc-vpp@main networkservicemesh/cmd-nsc-vpp#

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

networkservicemesh/cmd-nsc-vpp commit message:
commit 73c19d35be90a32202701a8663766f9494dcf2f9
Author: Network Service Mesh Bot <60070799+nsmbot@users.noreply.github.com>
Date:   Mon Apr 19 01:31:43 2021 -0500

    Update go.mod and go.sum to latest version from networkservicemesh/sd…

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

apps/nsc-memif/nsc.yaml

@@ -16,7 +16,7 @@ spec:
     spec:
       containers:
         - name: nsc
-          image: networkservicemeshci/cmd-nsc-vpp:00c4b2b3
+          image: networkservicemeshci/cmd-nsc-vpp:73c19d35
           imagePullPolicy: IfNotPresent
           env:
             - name: NSM_REQUEST_TIMEOUT