Updated workflow to push images with sha tags (#116)

Signed-off-by: Chaitanya Kulkarni <chkulkar@redhat.com>

Author: chaitanya1731

.github/workflows/maas-api-ci.yml

@@ -57,4 +57,6 @@ jobs:
 
       - name: Push image to Quay.io
         if: github.event_name == 'push'
-        run: make push-image
+        run: | 
+          make build-push-image
+          make build-push-image -e TAG=${{ github.sha }}