Replace fake token used in unit test with a dummy one.

Author: mirelap-amazon

test/unit/agent_metadata/test_aws_ec2_instance.py

@@ -44,7 +44,7 @@ def around(self):
                 httpretty.register_uri(
                     httpretty.GET,
                     EC2_API_TOKEN_URI,
-                    body="PARIOq_FXbIyL0maE9RcmrsyWtylvFh1ZDt0NrRUyNxeV1-DlpFpA==")
+                    body="fakeAndDummy")
                 yield
                 httpretty.disable()
                 httpretty.reset()