[catapult] - Copy Telemetry's gsutilz over to third_party.

third_party/gsutil/third_party/retry-decorator/README.rst

Index: third_party/gsutil/third_party/retry-decorator/README.rst
diff --git a/third_party/gsutil/third_party/retry-decorator/README.rst b/third_party/gsutil/third_party/retry-decorator/README.rst
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+
+Usage
+-----
+
+Retry decorator
+
+::
+
+    #!/usr/bin/env python
+
+    from __future__ import print_function
+    from retry_decorator import *
+
+    @retry(Exception, tries = 3, timeout_secs = 0.1)
+    def test_retry():
+        import sys
+        print('hello', file = sys.stderr)
+        raise Exception('Testing retry')
+
+    if __name__ == '__main__':
+        try:
+            test_retry()
+        except Exception as e:
+            print('Received the last exception')