MT#57761 Do not call restore permissions for set/del commands

In the deployment of our lab carrier, we are heavily using   ngcpcfg set
command for example to change the IP addresses of all proxies. The issue is that
execution of a command takes around 1,5 seconds and this seems because every time
"set" is used, we call the check-permissions script, which has some time
penalty to be executed. Most likely nobody uses set quite often, so that is why
the problem was not so visible for a long time.

Change-Id: I47c6c3b88b0f108aadf9d8d9a2b131e0cb76b498

sbin/ngcpcfg

@@ -159,6 +159,8 @@ case ${1:-} in
   init-shared|\
   log|\
   show|\
+  set|\
+  del|\
   status)
     main_action "$@"
     ;;
@@ -175,8 +177,6 @@ case ${1:-} in
   push|\
   push-parallel|\
   services|\
-  set|\
-  del|\
   patch)
     ngcpcfg_update_perms
     trap 'ngcpcfg_restore_perms' ERR EXIT