Test: adapt Docker build to Zuulv3 CI

[Lukasz Lukasiewicz]

1. Allow using custom repo files during build process.
2. Allow to specify base_tag to build test container from.

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/40341
Submitter: Lukasz Lukasiewicz (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/40360
Submitter: Lukasz Lukasiewicz (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/40360
Submitter: Senthilnathan Murugappan (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/40341
Committed: http://github.com/Juniper/contrail-test/commit/559c42f9c9c6f280899d00da34e9f3c6bc0adf9a
Submitter: Zuul v3 CI (<email address hidden>)
Branch: master

commit 559c42f9c9c6f280899d00da34e9f3c6bc0adf9a
Author: Lukasz Lukasiewicz <email address hidden>
Date: Tue Mar 6 10:43:14 2018 -0800

Copy all repofiles to /etc/yum.repos.d/

Do it only for contrail-test-test, since contrail-test-base will be
published on Dockerhub and may by used by developers outside of Juniper
to build test container.

Partial-Bug: 1754151
Change-Id: I0e86439888d86667cb60a379aa011ef29db46a8f

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/40360
Committed: http://github.com/Juniper/contrail-test/commit/f16eb41484b3b4b1153be7b98a95acc01678af73
Submitter: Zuul v3 CI (<email address hidden>)
Branch: master

commit f16eb41484b3b4b1153be7b98a95acc01678af73
Author: Lukasz Lukasiewicz <email address hidden>
Date: Tue Mar 6 19:49:42 2018 -0800

Allow building test container from specified tag

Partial-Bug: 1754151
Change-Id: Iff27f26abea407bb5596f490b167f493267db8e9

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/40669
Submitter: Lukasz Lukasiewicz (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/40692
Submitter: Lukasz Lukasiewicz (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/40669
Submitter: Lukasz Lukasiewicz (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/40692
Committed: http://github.com/Juniper/contrail-test/commit/497dcb9dd25771d0a135e4b5a1e868dbe56dbb2f
Submitter: Zuul v3 CI (<email address hidden>)
Branch: master

commit 497dcb9dd25771d0a135e4b5a1e868dbe56dbb2f
Author: Jarek Łukow <email address hidden>
Date: Thu Mar 15 11:36:35 2018 +0100

Fix base-tag param to build-container.sh

Partial-Bug: 1754151
Change-Id: I52fab5af9821f9f82c7a0b95a2078aa6933224bd

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/40669
Committed: http://github.com/Juniper/contrail-test/commit/9b1bf80f032f891dfc992ef2ecd70cfe1943ca4e
Submitter: Zuul v3 CI (<email address hidden>)
Branch: master

commit 9b1bf80f032f891dfc992ef2ecd70cfe1943ca4e
Author: Lukasz Lukasiewicz <email address hidden>
Date: Wed Mar 14 17:14:35 2018 -0700

Use custom mirrors for contrail-test-base

Overwrites mirrors back to stock ones at the end of the build to allow
users pulling the container and building their own contrail-test-test.

Change-Id: Idaafc3774e46a8f81ab6fd32800ebb0d7619e693
Depends-On: I52fab5af9821f9f82c7a0b95a2078aa6933224bd
Closes-Bug: 1754151