low hanging fruit oslo-incubator sync

Sync modules from oslo-incubator without changing files outside of
directory 'openstack/common'.

Synced Modules:

Patch logs were generated by 'git log --abbrev-commit --pretty=oneline
{file}'

config:
0e98afd Re-raise exception of unloadable library
1a6dfb9 Sanitize FQDN in config generator
e839886 Config generator fails with lazy messages
763eedf Fix DictOpt support in config sample generator

context:
c0d357b Add model_query() to db.sqlalchemy.utils module
13eb01c Adding domain to context and log
12bcdb7 Remove vim header
bdabd51 Remove uuidutils imports in oslo modules
44e8222 Revert "Removes generate_uuid from uuidutils"
571a78a Removes generate_uuid from uuidutils
36859e5 Adding instance_uuid to context and log
b21fc56 Fix bad default for show_deleted

eventlet_backdoor:
fcf517d Update oslo log messages with translation domains
ad17a69 Fix filter() usage due to python 3 compability
8b2b0b7 Use hacking import_exceptions for gettextutils._
12bcdb7 Remove vim header
1dcc747 Fix stylistic problems with help text

excutils:
33a2cee save_and_reraise_exception: make logging respect the reraise parameter
fcf517d Update oslo log messages with translation domains
8b2b0b7 Use hacking import_exceptions for gettextutils._
6d0a6c3 Correct invalid docstrings

fileutils:
fcf517d Update oslo log messages with translation domains
e71cd1a Merge "Trivial: Make vertical white space after license header
consistent"

gettextutils:
fd33d1e Fix gettextutil.Message handling of deep copy failures
047b2e4 Change lazy translation to retain complete dict
6d55e26 Add support for translating log levels separately

importutils:
885828a Deleted duplicated method in cliutils

jsonutils:
e3a1d9c Use six.moves.xmlrpc_client instead of xmlrpclib
3a31bba Python3 support for xmlrpclib

log:
da6d713 Revert setting oslo-incubator logs to INFO
0d18381 Set default log levels for oslo.messaging and oslo-incubator
346884d Add default user_identity to logging record
3570f44 Merge "Remove None for dict.get()"
bf6d71d Merge "Rename Openstack to OpenStack"
86707cd Remove None for dict.get()
61ff7a6 Rename Openstack to OpenStack
5b5068e Merge "Fix deprecated messages sent multiple times"
dda47c9 Use ContextFormatter for imparting context info
52b6446 Fix deprecated messages sent multiple times
d6e1ba7 Merge "default connectionpool to WARN log level"
7f4ad99 Merge "Small edits on help strings"
8c3046b Merge "Backport 'ident' from python 3.3 for Oslo's
SysLogHandler"
1978114 default connectionpool to WARN log level

loopingcall:
fcf517d Update oslo log messages with translation domains
8b2b0b7 Use hacking import_exceptions for gettextutils._
12bcdb7 Remove vim header

memorycache:
12bcdb7 Remove vim header
5e765b2 python3: Fix traceback while running tests

network_utils:
897aa7c urlsplit issues with IPv6 addresses in python26
35dc1d7 py3kcompat: remove
fb738d4 Merge "Use py3kcompat urlutils functions instead of urlparse"
12bcdb7 Remove vim header
4c22556 Use py3kcompat urlutils functions instead of urlparse

processutils:
fcf517d Update oslo log messages with translation domains

service:
e2634a7 Add missing _LI for LOG.info in service module
0150ad7 Merge "Reap child processes gracefully if greenlet thread gets killed"
53e1214 notify calling process we are ready to serve
fcf517d Update oslo log messages with translation domains
1e70078 Revert "service: replace eventlet event by threading"
0644073 Simplify launch method
6b4d255 Merge "service: replace eventlet event by threading"
a4f145e Merge "Allow configurable ProcessLauncher liveness check"
8b2b0b7 Use hacking import_exceptions for gettextutils._

systemd:
53e1214 notify calling process we are ready to serve

threadgroup:
5f8ace0 Merge "threadgroup: use threading rather than greenthread"
2d06d6c Simple typo correction
4d18b57 threadgroup: use threading rather than greenthread
25ff65e Make wait & stop methods work on all threads
12bcdb7 Remove vim header
9d3c34b Add a link method to Thread

timeutils:
d815087 Merge "Fix spelling errors in comments"
63d5ba6 Merge "Fix typo in parameter documentation (timeutils)"
71208fe Fix spelling errors in comments
7013471 Fix typo in parameter documentation (timeutils)

versionutils:
8b2b0b7 Use hacking import_exceptions for gettextutils._
a5ae087 fixed typos
45658e2 Fix violations of H302:import only modules
db29de0 Merge "Adds decorator to deprecate functions and methods"
37ea814 Adds decorator to deprecate functions and methods
12bcdb7 Remove vim header

xmlutils:
12bcdb7 Remove vim header

Co-Authored-By: ChangBo Guo(gcb) <eric.guo@easystack.cn>

Change-Id: Ic8e47cb037683338f972df880b51921c1f9f98d8
Revert object-assuming changes to _post_live_migration()

Change I140bfec2a52bf659a725a7dbe78ba5c527ed26de converted the
_post_live_migration() call to assume it was passed an object
because the post_live_migration_at_destination() method uses them.
However, it is also called from live_migration() on the source,
which clearly is still using instance dicts.

This patch reverts the changes that assume an instance object,
as well as the tests that were changed as a result. It also
changes the clear_events_for_instance() call to use dict syntax,
since that is called from the live migration path currently.

Closes-bug: #1302334
Change-Id: I6e915035bc2c1b890e606d17a4195b88c3f26b13
Merge "low hanging fruit oslo-incubator sync"
Merge "Revert object-assuming changes to _post_live_migration()"
Merge commit 'refs/changes/38/84138/2' of git://gold.eng.hq.xensource.com/git/github/openstack/nova into tmpbranch