CFY-1688 update delete operation.
CFY-1688 update blueprint.
CFY-1688 support disk0-4 categories.
CFY-1688 flake8.
Update .gitignore
add support of wait for transactions on instance
fix line too long and expected 2 blank lines error
Merge pull request #20 from cloudify-cosmo/CFY-1775-wait-for-transactions

add support of wait for transactions on instance
CFY-1688 changed the default username and api_key in test.
CFY-1688 merged with master.
CFY-1688 support multiple group codes for the same item id.
CFY-1688 update transaction name.
CFY-1688 flake8.
Update blueprint.yaml
Merge pull request #21 from cloudify-cosmo/CFY-1688-manager-blueprint

Cfy 1688 manager blueprint
CFY-1771 added softlayer_configuration type, added api_config property to softlayer virtual server type, added support for reading configurations from file.
CFY-1771 cosmetic and flake8.