Comment 72 for bug 1630513

Reviewed: https://review.opencontrail.org/27898
Committed: http://github.org/Juniper/contrail-controller/commit/edeac12c6f0fb44e79039d914da28153fca10cb7
Submitter: Zuul (<email address hidden>)
Branch: R3.1.1.x

commit edeac12c6f0fb44e79039d914da28153fca10cb7
Author: Ignatious Johnson Christopher <email address hidden>
Date: Mon Nov 21 15:07:15 2016 -0800

Certificates needs to be chanined and bundled
in the order (certfile, keyfile and cacert).

1. Chaining in the certificate in correct order
2. Making certfile/keyfile optional

Closes-Bug: 1639426
Closes-Bug: 1630513

Getting certs as argument to the VncApi class and creating
unique certbundle for request to different api-servers.
Closes-Bug: 1644713
Closes-Bug: 1644707

Change-Id: Ib5e66bfdd27795bd090c3b3b49207241cbc5f0ae
(cherry picked from commit df192ce6f9623c628dee975754027f827dbc28d9)
(cherry picked from commit d49aec87815d0b881aaec405832c5ac581e29c3d)
(cherry picked from commit 18a920da6f4ce95a66565a5e61ed9b5d6af39d4f)

Conflicts:
 src/api-lib/vnc_api.py

When insecure flag is set to True in contrail-keystone-auth.conf,
contrail-api fails to start as the cafile is not initialized.
Initializing cafile to empty string, to handle insecure connections.

Change-Id: I23e4fd8ba533000e041fc892845ccc0bbd50fc48
Closes-Bug: 1650697
(cherry picked from commit 9c6d9ca425e9030fdab01db81f15eac479772854)