including ssh fields usage and bumping to 3.1
Merge branch 'master' of https://github.com/cloudify-cosmo/cloudify-manager-blueprints
Merge pull request #16 from cloudify-cosmo/CFY-1727_add_ssh_keys_configuration

Cfy 1727 add ssh keys configuration
Bump version to 3.1
Bump version to 3.1
CFY-1688 merged with master.