github action for installer

added a new run in the action to
ensure that no changes are manually added
to the custom yaml files directly or the
the all-in-one installer.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

.github/workflows/build.yaml

@@ -26,6 +26,10 @@ jobs:
           go-version-file: go.mod
       - name: run make build
         run: make build
+      - name: make build installer
+        run: make build-installer
+      - name: run build multifile installer
+        run: make build-multifile-installer
       - name: Check for uncommitted changes
         run: make check-all-committed
       - name: Show the uncommitted "git diff"