Simplify  wait function
Add support for several interfaces in one network
More expressive check for network existent
Silent suspend and resume in shell
Suspend has verbose False by default.
verbose is True by default in resume function
Merge pull request #10 from nikolay-fedotov/suspend-fix

Suspend has verbose False by default.
Fix verbose in Environment model
Change default value of verbose parameter to True in all functions
Merge pull request #11 from nikolay-fedotov/verbose-fix

Verbose fix
Merge branch '2.0'

Conflicts:
	devops/driver/dummy/dummy_driver.py
	devops/models.py
	devops/tests/test_models.py