update KMS key

Author: sakthivelmanii

samples/snippets/pom.xml

@@ -182,8 +182,8 @@
             <spanner.test.instance.mr>java-client-mr-integration-tests</spanner.test.instance.mr>
             <spanner.test.instance.config>nam11</spanner.test.instance.config>
             <spanner.test.key.location>us-east1</spanner.test.key.location>
-            <spanner.test.key.ring>java-client-integration-test-cmek-ring</spanner.test.key.ring>
-            <spanner.test.key.name>java-client-integration-test-cmek-key</spanner.test.key.name>
+            <spanner.test.key.ring>cmek-test-key-ring</spanner.test.key.ring>
+            <spanner.test.key.name>cmek-test-key</spanner.test.key.name>
             <spanner.sample.database>mysample</spanner.sample.database>
             <spanner.quickstart.database>quick-db</spanner.quickstart.database>
           </systemPropertyVariables>