Add .gitignore

Change-Id: I474528b75512ad33f248d998735cfc7bfee3ce5a

.gitignore

@@ -0,0 +1,54 @@
+*.DS_Store
+*.egg*
+*.log
+*.mo
+*.pyc
+*.swo
+*.swp
+*.sqlite
+*~
+.autogenerated
+.coverage
+.gyan-venv
+.project
+.pydevproject
+.ropeproject
+.stestr/
+.testrepository/
+.tox
+.idea
+.venv
+AUTHORS
+Authors
+build-stamp
+tags
+build/*
+CA/
+ChangeLog
+coverage.xml
+cover/*
+covhtml/*
+dist/*
+doc/source/api/*
+doc/build/*
+api-guide/build/*
+api-ref/build/*
+placement-api-ref/build/*
+etc/gyan/gyan.conf.sample
+etc/gyan/policy.yaml.sample
+etc/gyan/policy.yaml.merged
+instances
+keeper
+keys
+local_settings.py
+MANIFEST
+nosetests.xml
+gyan/tests/cover/*
+gyan/vcsversion.py
+tools/conf/gyan.conf*
+doc/source/_static/gyan.conf.sample
+doc/source/_static/gyan.policy.yaml.sample
+doc/source/_static/placement.policy.yaml.sample
+
+ # Files created by releasenotes build
+releasenotes/build