Remove namespaces from all examples.

examples/spark/spark-master-controller.yaml

@@ -2,7 +2,6 @@ kind: ReplicationController
 apiVersion: v1
 metadata:
   name: spark-master-controller
-  namespace: spark-cluster
 spec:
   replicas: 1
   selector:

examples/spark/spark-master-service.yaml

@@ -2,7 +2,6 @@ kind: Service
 apiVersion: v1
 metadata:
   name: spark-master
-  namespace: spark-cluster
 spec:
   ports:
     - port: 7077

examples/spark/spark-ui-proxy-controller.yaml

@@ -2,7 +2,6 @@ kind: ReplicationController
 apiVersion: v1
 metadata:
   name: spark-ui-proxy-controller
-  namespace: spark-cluster
 spec:
   replicas: 1
   selector:

examples/spark/spark-ui-proxy-service.yaml

@@ -2,7 +2,6 @@ kind: Service
 apiVersion: v1
 metadata:
   name: spark-ui-proxy
-  namespace: spark-cluster
 spec:
   ports:
     - port: 80

examples/spark/spark-worker-controller.yaml

@@ -2,7 +2,6 @@ kind: ReplicationController
 apiVersion: v1
 metadata:
   name: spark-worker-controller
-  namespace: spark-cluster
 spec:
   replicas: 2
   selector:

examples/spark/zeppelin-controller.yaml

@@ -2,7 +2,6 @@ kind: ReplicationController
 apiVersion: v1
 metadata:
   name: zeppelin-controller
-  namespace: spark-cluster
 spec:
   replicas: 1
   selector:

examples/spark/zeppelin-service.yaml

@@ -2,7 +2,6 @@ kind: Service
 apiVersion: v1
 metadata:
   name: zeppelin
-  namespace: spark-cluster
 spec:
   ports:
     - port: 80