CFY-1187 fixed server.py; added delete operations mapping for subnet and port
CFY-1185 fix plugin yaml
Modified 'False' to 'false' in plugin template yaml
Bump version to 1.1m4
Merge branch 'master' into CFY-1185-remove-plugin-inheritance
Merge pull request #21 from cloudify-cosmo/CFY-1185-remove-plugin-inheritance

CFY-1185 fix plugin yaml
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.
CFY-1215: Address pull request comments
CFY-1215: Fix _get_volume_by_name

Use volume.display_name instead of volume.name
CFY-1215: Address Ran Ziv comments

Fix the code.
Update unit tests.