Imported Translations from Transifex

For more information about this automatic import see:
https://wiki.openstack.org/wiki/Translations/Infrastructure

Change-Id: I4425493d4cdac4968e97b5c39aea1be3cb6b001d
Fix re-create session during transient failures

When invoke_api fails due to VimConnectionException it does not
always mean an expired vim session. It could be due to other
transient failures where the socket gets closed by the server.
To make it worse, vcenter doesn't support login call when a session
is already active. As a result, the re-create session may instead
fail.

This fix checks to see if the session is active before re-creating
the same.

Closes-Bug: #1398502

Change-Id: Id28217f8fe63c23767c66221a68ec944c9b27807
Merge "Imported Translations from Transifex"
Workflow documentation is now in infra-manual

Replace URLs for workflow documentation to appropriate parts of the
OpenStack Project Infrastructure Manual.

Change-Id: Ic52ae9d1d41964dd0e535aa0569df2a7c958f105
Update urllib3 requirements

Recent commit 969bfba931f132199662851c6f309be67761c4f9
uses urllib3 connection api's that is available only from 1.8.3.

Updating the requirements file.

Change-Id: Ibcac6d02b704e41f64baf6d237049b263e5e036d