Modifies deb pkg building to include postinst script

stage-build now uses make instead of tox, to allow adding
postinst script.
Postinst script adds installation of dependencies through pip.
Adds missing MANIFEST and stdeb.cfg.

Signed-off-by: Benjamin Diaz <bdiaz@whitestack.com>
Change-Id: I42849e0a3457745ad00a169128554cf3574bcb23
diff --git a/MANIFEST.in b/MANIFEST.in
new file mode 100644
index 0000000..cbc5d1e
--- /dev/null
+++ b/MANIFEST.in
@@ -0,0 +1,21 @@
+# Copyright 2018 Whitestack, LLC
+#
+# 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.
+#
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact: bdiaz@whitestack.com or glavado@whitestack.com
+##
+
+include README.rst
+recursive-include osm_common *.py *.xml *.sh
+recursive-include devops-stages *
\ No newline at end of file