CFY-1187 added name transformation to types which didnt have it; modified default name from node id to a more informative one; added the use_existing and resource_id properties to all types
CFY-1187 implemented use_existing feature; created sugared Nova client; improved server.py
CFY-1187 flake8 fixes
Merge branch 'master' into CFY-1187-support-usage-of-existing-resources
CFY-1187 fixed server.create mapping and signature
CFY-1187 fixed server's connect_floatingip
CFY-1187 fixed type names of floatingip and security-group
CFY-1187 fixed validation on external server nics
CFY-1187 added log messages; removed external_resource runtime property; fixed bug in port/subnet where runtime properties werent deleted if verification of use existing failed
Merge pull request #18 from cloudify-cosmo/CFY-1187-support-usage-of-existing-resources

CFY 1187 support usage of existing resources
CFY-1215: Add volume create/delete implementation
CFY-1215: Add volume attach/detach implementation
CFY-1215: Update plugin template
CFY-1215: Add unit tests

Add nominal unit tests for volumes operations.
Fix issues discovered by unit tests.
CFY-1215: Fix issues found by manual tests

Fix issues discovered by manual tests.
Update unit tests.