Update user script help strings

* specify the supported phases and which one is the default
* mention the fact that when updating transfers, the script path
  can be omitted in order to unregister it

Add `endpoint_export_inventory` CLI command

Signed-off-by: Mihaela Balutoiu <mbalutoiu@cloudbasesolutions.com>

Update `unit test`

Signed-off-by: Mihaela Balutoiu <mbalutoiu@cloudbasesolutions.com>

Unit tests: cli: shell: Add 'password' argument to keystone v3.Password

Add deployments unit tests

Set SSL verification settings to licensing and logging clients

Add unit tests for `coriolisclient.cli.services` module

Omit unit tests directory from coverage

Merge pull request #75 from Dany9966/migration-status

Fix migration object status formatting

Merge pull request #74 from aznashwan/replica-list-detail

Prevent requesting details on Migration/Replica list calls.