Apply watcher cr in openstack namespace

In unijobs, when we do oc apply <watcher cr name>, It tries
to create resources in default namespace leading to following
errors:
```
 INFO   Controllers.Watcher    Found zero services for Galera instance openstack, requeueing
```

Galera instance openstack runs in openstack namespace that's why
above error is coming.

We need to apply watcher cr in openstack namespace so that watcher
can use resources from openstack namespace.

Signed-off-by: Chandan Kumar (raukadah) <raukadah@gmail.com>

Author: raukadah

Makefile

@@ -393,10 +393,12 @@ watcher: ## Install watcher operator via olm
 	timeout 300s bash -c "while ! (oc get csv -n  openshift-operators -l  operators.coreos.com/cluster-observability-operator.openshift-operators -o jsonpath='{.items[*].status.phase}' | grep Succeeded); do sleep 10; done"
 	timeout 300s bash -c "while ! (oc get csv -n openstack-operators -l operators.coreos.com/watcher-operator.openstack-operators -o jsonpath='{.items[*].status.phase}' | grep Succeeded); do sleep 1; done"
 
+OPENSTACK_NAMESPACE ?= openstack
+
 .PHONY: watcher_deploy
 watcher_deploy: ## Deploy watcher service
-	oc apply -f ${WATCHER_SAMPLE_CR_PATH}
-	oc wait watcher watcher --for condition=Ready --timeout=600s
+	oc apply -f ${WATCHER_SAMPLE_CR_PATH} -n ${OPENSTACK_NAMESPACE}
+	oc wait watcher watcher --for condition=Ready --timeout=600s -n ${OPENSTACK_NAMESPACE}
 
 .PHONY: watcher_deploy_cleanup
 watcher_deploy_cleanup: ## Undeploy watcher service