Add feature to pass extra args when pushing image (#19)

If a user wants to pass few extra args to push
command when pushing image, then they can pass
using 'extra-args' input parameter.

Signed-off-by: divyansh42 <diagrawa@redhat.com>

.github/workflows/verify-push.yaml

@@ -92,6 +92,8 @@ jobs:
           registry: ${{ env.IMAGE_REGISTRY }}/${{ secrets.REGISTRY_USER }}
           username: ${{ secrets.REGISTRY_USER }}
           password: ${{ secrets.REGISTRY_PASSWORD }}
+          extra-args: |
+            --disable-content-trust
       
       - name: Echo outputs
         run: |