add .gitignore
add .gitignore

Ignore common build-related files, like .pyc files and others.

openstack-packages/rdopkg,djipko/rdopkg,openstack-packages/rdopkg,hguemar/rdopkg,redhat-openstack/rdopkg,djipko/rdopkg,redhat-openstack/rdopkg,hguemar/rdopkg