Add create environment method
Refactoring test_cluster_network according new creation of environment, delete 'skip' attribute
Refactoring tests according new creation of environment
Rename method 'createEnvironment' to 'create_environment' and change  imports to relative
Nodes tab page refactoring
Change xpath according new ui
Add new checkbox with set_value without verifying if element is visible
Fix xpath according new ui
Add checkboxes
Add role panel
Assign roles according new ui
pep8 fix
Refactoring test_deployment_simple_mode
Add buttons to deploy changes dialog
Fix names, add methods to delete nodes, to select nodes, to assign roles
Fix xpath
Add delete nodes dialog
Fix test_cluster_nodes.py , delete useless test
Fix test_delete_cluster.py
Fix test_deployment_ha_mode.py