Add .gitignore file to the repo

Change-Id: I26823cfe2c1ee0ae63092a1384853f99babba076

.gitignore

@@ -0,0 +1,69 @@
+# 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'
+
+# Compiled source #
+###################
+*.com
+*.class
+*.dll
+*.exe
+*.o
+*.so
+*.pyc
+build/
+dist/
+doc/build/
+
+# Packages #
+############
+# it's better to unpack these files and commit the raw source
+# git has its own built in compression methods
+*.7z
+*.dmg
+*.gz
+*.iso
+*.jar
+*.rar
+*.tar
+*.zip
+
+# Logs and databases #
+######################
+*.log
+*.sql
+*.sqlite
+logs/*
+
+# OS generated files #
+######################
+._*
+.tox
+*.egg-info
+.eggs
+
+# Generated by pbr while building docs
+######################################
+AUTHORS
+ChangeLog
+
+# Files created by releasenotes build
+releasenotes/build
+
+# Test temp files
+tests/common
+tests/*.retry
+
+# Vagrant artifacts
+.vagrant
+
+# Git clones
+openstack-ansible-ops
+previous