List of improvements:
* Fixed bug with freezer complete command. The root cause of
this problem was not implemented methods get_parser in
classes SessionStart and SessionDelete.
* Actions session-start and session-end and appropriate classes
was removed due to this actions are not called by user, it's
triggered by freezer-scheduler directly [1].
* Action session-list now prints empty table if no sessions
found.
* Import objects replaced on import modules
[1]85ab97121e/freezer/scheduler/scheduler_job.py (L432)
Change-Id: I49933fd77d858fa0e07849889678de9703a4824e
Closes-Bug: #1640761
Closes-Bug: #1641991
Signed-off-by: Ruslan Aliev <raliev@mirantis.com>
35d67b6a4f