fix: Attribute error Name while executing the sample code (#205)

* Fix attribute error `Name` while getting the status of cluster

`cluster.status.State.Name(cluster.status.state),`  this code will throw an attribute error when executed because it's trying to access State.Name which is not a function of class ClusterStatus.State
A better approach will be to use the `cluster.status.state.name` as State is of enum type

* fix:attribute error Name while getting the status of cluster

Author: vikrant-sinha

dataproc/snippets/list_clusters.py

@@ -32,7 +32,7 @@ def list_clusters(dataproc, project, region):
             (
                 "{} - {}".format(
                     cluster.cluster_name,
-                    cluster.status.State.Name(cluster.status.state),
+                    cluster.status.state.name
                 )
             )
         )

dataproc/snippets/submit_job_to_cluster.py

@@ -137,7 +137,7 @@ def list_clusters_with_details(dataproc, project, region):
             (
                 "{} - {}".format(
                     cluster.cluster_name,
-                    cluster.status.State.Name(cluster.status.state),
+                    cluster.status.state.name,
                 )
             )
         )