Cleanup Magnum source code

[yatin]

Source code of magnum is changed/structured too much in Newton, some code updation/deletion is missed, which can be cleaned up.

1) Cleanup exception.py: pod, rc, container are removed so there exception's can be removed.
Earlier cleanup for exception was done with this patch also: https://review.openstack.org/#/c/320843/

2) k8s_manifest and its UT: since pod, rc and service are removed from magnum code, k8s_manifest which was used by by them can be removed.

3) yamlutils.py and its UT: yamlutils was added in beginning, since then it is not used, so should be removed.

4. safe_utils.py: it was used until it's use is removed in: https://review.openstack.org/#/c/320843/
, this can be removed now.

5) Translations for Pod/rc/container/svc

6) k8s fragments enable-etcd.sh is not used, etcd is enabled in master with enable-services-master.sh

7) Remove "provision_state" parameters(specific to ironic) from magnum source code these were originally copied from ironic: https://review.openstack.org/#/c/138280

Other code cleanup can also be tracked within this bug report only by updating bug description and submitting patches seperately for each cleanup.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/376348

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/376356

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/376362

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/376365

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/377415

[OpenStack Infra (hudson-openstack)]

Change abandoned by yatin (<email address hidden>) on branch: master
Review: https://review.openstack.org/377415
Reason: It would be automatically taken care by Zanata Bot.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/376356
Committed: https://git.openstack.org/cgit/openstack/magnum/commit/?id=bf1ace2c26b9a571dbed6f7d3bb9eb4bd35e1ec5
Submitter: Jenkins
Branch: master

commit bf1ace2c26b9a571dbed6f7d3bb9eb4bd35e1ec5
Author: yatin <email address hidden>
Date: Mon Sep 26 15:36:09 2016 +0530

    Remove k8s_manifest.py

    k8s_manifest.py was used by pod, rc and service objects.
    These objects have been removed recently, so k8s_manifest.py
    which was used by them is removed with this patch.

    Change-Id: I5f06f8a0d7b6cc4b7435ef3b645d7585772d70fb
    Implements: blueprint delete-container-endpoint
    Partial-Bug: #1627663

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/376348
Committed: https://git.openstack.org/cgit/openstack/magnum/commit/?id=4cc5a628d9059879d85806dc7636f20a243170ad
Submitter: Jenkins
Branch: master

commit 4cc5a628d9059879d85806dc7636f20a243170ad
Author: yatin <email address hidden>
Date: Mon Sep 26 15:26:16 2016 +0530

    Remove Exceptions for Container/Pod/Service

    k8s APIs pod, rcs, svc and container API have been
    removed. With this patch Exceptions specific to
    these API's are removed.

    Change-Id: I935672a9fe871c99a18e1f618151f01613c5ce04
    Implements: blueprint delete-container-endpoint
    Partial-Bug: #1627663

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/376362
Committed: https://git.openstack.org/cgit/openstack/magnum/commit/?id=78b4b091b2bc06e253f5716929e8d818a9201ac0
Submitter: Jenkins
Branch: master

commit 78b4b091b2bc06e253f5716929e8d818a9201ac0
Author: yatin <email address hidden>
Date: Mon Sep 26 15:41:02 2016 +0530

    Remove yamlutils.py

    yamlutils.py is never used, so it should be removed
    to keep code clean.

    Change-Id: I862eaca19170370248410775277a7af901643c41
    Partial-Bug: #1627663

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/376365
Committed: https://git.openstack.org/cgit/openstack/magnum/commit/?id=dc7b7af42a8fc3f7618dfbe6c26c0ae935fd2ede
Submitter: Jenkins
Branch: master

commit dc7b7af42a8fc3f7618dfbe6c26c0ae935fd2ede
Author: yatin <email address hidden>
Date: Mon Sep 26 15:46:17 2016 +0530

    Remove safe_utils.py

    safe_utils.py is not used after it's use is removed in
    below patch:
    https://review.openstack.org/#/c/320843/

    This module is removed with this patch.

    Change-Id: Ib75c60edc4bc8fb6e5b46c35e6975eb821b29797
    Partial-Bug: #1627663

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/415609

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/415609
Committed: https://git.openstack.org/cgit/openstack/magnum/commit/?id=5902daf8ae49797fae06f713ff1fd24e41aa794d
Submitter: Jenkins
Branch: master

commit 5902daf8ae49797fae06f713ff1fd24e41aa794d
Author: yatin <email address hidden>
Date: Thu Dec 29 11:34:06 2016 +0530

    Remove provision_state parameters(specific to ironic)

    The provision_state parameter was copied from ironic
    with following patch:
    https://review.openstack.org/#/c/138280

    It should be removed as it's not required in magnum.

    Change-Id: Id9e08ee731ae79531c8e29fd47e4fa650b1c5dcc
    Partial-Bug: #1627663