- defined lwrp openstack_common_database
- removed libraries/database.rb
- created _openstack_common_database_spec.rb recipe for testing the
provider
- comments for db2 in provider since this resource does not exist in any
availabe or linked opensource cookbook
- updated README.md
related-Change-Id: Idb47c9b7e3ce954ddd1a544b71b96eed734e46e5
Change-Id: I1940cd63aa1ae95586e6ecbed9476f7ce5fe19ab