NSX|V3: have better configuration names for the api credentials

[Gary Kotton]

In order to differentiate between the API and the controllers we should update nsx_* to be nsx_api*. This is for the nsx_manage, nsx_user and nsx_password.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/255742

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/255742
Committed: https://git.openstack.org/cgit/openstack/vmware-nsx/commit/?id=696b712ad44f376b33aca47773d90c5670893acc
Submitter: Jenkins
Branch: master

commit 696b712ad44f376b33aca47773d90c5670893acc
Author: Gary Kotton <email address hidden>
Date: Thu Dec 10 00:51:55 2015 -0800

    NSX|V3: improve configuration names

    The configuration names nsx_* have been changed to nsx_api_*.
    This better refelect the configuration and management of the NSX API
    service.

    Change-Id: I999f56efad1b413bc677a9de8b535f3f4785e4f5
    Closes-bug: #1524659

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/liberty
Review: https://review.openstack.org/256188

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/256188
Committed: https://git.openstack.org/cgit/openstack/vmware-nsx/commit/?id=7d46c24055b4bdb64690d82c36974f1204166ea5
Submitter: Jenkins
Branch: stable/liberty

commit 7d46c24055b4bdb64690d82c36974f1204166ea5
Author: Gary Kotton <email address hidden>
Date: Thu Dec 10 00:51:55 2015 -0800

    NSX|V3: improve configuration names

    The configuration names nsx_* have been changed to nsx_api_*.
    This better refelect the configuration and management of the NSX API
    service.

    Change-Id: I999f56efad1b413bc677a9de8b535f3f4785e4f5
    Closes-bug: #1524659
    (cherry picked from commit 696b712ad44f376b33aca47773d90c5670893acc)