Slightly clarify the instance names of rr release test runners.

Author: rocallahan

release-process/test-system.py

@@ -62,7 +62,7 @@ def __init__(self, machine_type, architecture, distro_config, keypair_pem_file):
 
         tags = [{
             'ResourceType': 'instance',
-            'Tags': [{'Key': 'Name', 'Value': "rr-test %s %s"%(self.distro_name, architecture)}]
+            'Tags': [{'Key': 'Name', 'Value': "rr release test %s %s"%(self.distro_name, architecture)}]
         }]
         response = self.ec2.create_instances(ImageId=ami, InstanceType=machine_type,
             KeyName='rr-testing', MinCount=1, MaxCount=1,