Strategy goal required have to be True

[Jean-Emile DARTOIS]

In the section "WATCHER_GOALS_OPTS" the dict option "goals" is not mandatory. However it should be.

So we need to add "required=True"
The code is available here :
https://github.com/openstack/watcher/blob/master/watcher/decision_engine/strategy/selection/default.py#L33

WATCHER_GOALS_OPTS = [
    cfg.DictOpt(
        'goals',
        default=default_goals,
        required=True,
        help='Goals used for the optimization. '
             'Maps each goal to an associated strategy (for example: '
             'BASIC_CONSOLIDATION:basic, MY_GOAL:my_strategy_1)'),
]

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/263725

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/263725
Committed: https://git.openstack.org/cgit/openstack/watcher/commit/?id=34ab93a5f20cc64bdaaca676545d536aeaa8d58f
Submitter: Jenkins
Branch: master

commit 34ab93a5f20cc64bdaaca676545d536aeaa8d58f
Author: Gábor Antal <email address hidden>
Date: Tue Jan 5 14:12:06 2016 +0100

    Strategy goals should be required in conf

    In the section "WATCHER_GOALS_OPTS" the dict option "goals"
    is not mandatory. However it should be.

    Change-Id: I2e0770cf7787fed449c012bc45462e3138992ebf
    Closes-Bug: #1531116