Adding release notes and enabling import order check

Enabling Flake8 library import order check,
adding release_notes, enabling stage-test failing by tox results.

Change-Id: I490b4cb3fe5904f54d84f0ce9b41fe91ec8b4f5d
Signed-off-by: aticig <gulsum.atici@canonical.com>
diff --git a/tox.ini b/tox.ini
index ce0ffcb..e763ca2 100644
--- a/tox.ini
+++ b/tox.ini
@@ -52,7 +52,9 @@
 
 #######################################################################################
 [testenv:flake8]
-deps = flake8
+deps =
+        flake8
+        flake8-import-order
 commands =
         flake8 osm_common/ setup.py
 
@@ -104,6 +106,15 @@
 whitelist_externals = sh
 
 #######################################################################################
+[testenv:release_notes]
+deps = reno
+skip_install = true
+whitelist_externals = bash
+commands =
+        reno new {posargs:new_feature}
+        bash -c "sed -i -e '1 e head -16 tox.ini' releasenotes/notes/{posargs:new_feature}*.yaml"
+
+#######################################################################################
 [flake8]
 ignore =
         W291,
@@ -121,3 +132,4 @@
 max-line-length = 120
 show-source = True
 builtins = _
+import-order-style = google