Adding gitignore rules

Change-Id: I2671b807f5ea08a4644a5b791b10307a988b1cd9

.gitignore

@@ -0,0 +1,27 @@
+# Add patterns in here to exclude files created by tools integrated with this
+# repository, such as test frameworks from the project's recommended workflow,
+# rendered documentation and package builds.
+#
+# Don't add patterns to exclude files created by preferred personal tools
+# (editors, IDEs, your operating system itself even). These should instead be
+# maintained outside the repository, for example in a ~/.gitignore file added
+# with:
+#
+# git config --global core.excludesfile '~/.gitignore'
+
+AUTHORS
+ChangeLog
+*.pyc
+*.log
+.tox
+.coverage
+*.egg-info/
+.eggs
+*.egg
+build/
+doc/build/
+doc/source/api/
+dist/
+.stestr/
+releasenotes/build
+cover/