Instead of using context_dir directly specify the Dockerfile path (#71899)

Signed-off-by: Malay Kumar Parida <[email protected]>

Author: malayparida2000

ci-operator/config/red-hat-storage/ocs-operator/red-hat-storage-ocs-operator-main.yaml

@@ -12,8 +12,7 @@ images:
 - build_args:
   - name: LDFLAGS
     value: -X github.com/red-hat-storage/ocs-operator/v4/version.Version=4.21.0
-  context_dir: metrics
-  dockerfile_path: Dockerfile
+  dockerfile_path: metrics/Dockerfile
   to: ocs-metrics-exporter
 operator:
   bundles: