Fixes 'setup doesn't install rebase-editor.py'

Add a dummy __init__ to persuade setuptools to install the
script/rebase-editor.py script

Change-Id: I9c8a6cbb7875febcdf315a92c3b2d8404e126b96
JIRA: OPSAUTO-891

ghp/scripts/__init__.py

@@ -0,0 +1,16 @@
+#
+# Copyright (c) 2011 OpenStack LLC.
+# Copyright (c) 2013 Hewlett-Packard
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+# implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.