Add history file to documentation

Show the ChangeLog in the history page of the documentation.

Change-Id: I308b6eb1e729e78ae7c8c9e838d62587ac20cf66
Break up the logging around the lockfile release/unlock

To be better able to identify when and where are file lock
breaks when release occurs it's useful to distingush the
different steps of release and independently log them as
unique steps.

Change-Id: I3b605994ca7673e5c97e73821d2ea777117f5f09
Remove oslo-incubator fixture

Change-Id: I49249c5537c749bffed69875112ac80b6450ee7c
Imported Translations from Transifex

Change-Id: I8833c7a2422fc6a69a609615beec197b5d61df30
Cleanup and adding timing to lockutils logging

* Cleanup lockutils logging by showing lock name and function in
same line.  The enables easier parsing of information related to lock
acquisition from logs.

* Logs time a thread spent waiting on locks, as well as time spent
holding locks.  This will make it easier to debug suboptimal locking.

Change-Id: Ic310d84eb1ed75cc1c21c3d7861b4a3927ebaf23
Updated from global requirements

Change-Id: Ie0ee5ee6026913c6e220b1f7cd0c740a7e2a5af5
Merge "Cleanup and adding timing to lockutils logging"
Merge "Remove oslo-incubator fixture"
Imported Translations from Transifex

Change-Id: I097743d4dcd63dabb8ace80f6ffd52e131d2bd1d
Merge "Add history file to documentation"
provide sane cmd exit reporting

Previously the debug messages around command exit were a naked return
code with no reference to what was run. When dealing with very long
running commands (especially those that fail) this means that figuring
out what command was run is possibly very difficult.

Change-Id: I6c44e1106f77fab517fcb0b6d6dd8ed56c853496
Imported Translations from Transifex

Change-Id: I68d736457e762e388d149de8ce039fb639e2b5bc
Add hacking import exception for i18n

This is preferred over adding noqa's everywhere we import a
translation function.

Change-Id: I171df45b62beb9776e8dbb52e33a408a832bf86f
Merge "Add hacking import exception for i18n"