Switch my_activity.py to use gerrit_util for gerrit REST connections

gerrit_util.py

Index: gerrit_util.py
diff --git a/gerrit_util.py b/gerrit_util.py
index 7c44f03107468de934940bd1bf7646630818c53f..effd2a7ede32ad6c609cd457e517348df480fc65 100755
--- a/gerrit_util.py
+++ b/gerrit_util.py
@@ -65,11 +65,19 @@ def CreateHttpConn(host, path, reqtype='GET', headers=None, body=None):
   headers = headers or {}
   bare_host = host.partition(':')[0]
   auth = NETRC.authenticators(bare_host)
+  review_auth = NETRC.authenticators(bare_host.replace('-review', ''))
+
   if auth:
     headers.setdefault('Authorization', 'Basic %s' % (
         base64.b64encode('%s:%s' % (auth[0], auth[2]))))
+    url = '/a/%s' % path
+  elif review_auth:
+    headers.setdefault('Authorization', 'Basic %s' % (
+        base64.b64encode('%s:%s' % (review_auth[0], review_auth[2]))))
+    url = '/a/%s' % path
   else:
     LOGGER.debug('No authorization found')
+    url = '/%s' % path
   if body:
     body = json.JSONEncoder().encode(body)
     headers.setdefault('Content-Type', 'application/json')
@@ -84,7 +92,7 @@ def CreateHttpConn(host, path, reqtype='GET', headers=None, body=None):
   conn = GetConnectionClass()(host)
   conn.req_host = host
   conn.req_params = {
-      'url': '/a/%s' % path,
+      'url': url,
       'method': reqtype,
       'headers': headers,
       'body': body,