Improve help strings

Follow oslo.config style guide for help strings better to create
consistent help strings:
* Capitalize first word of each help string
* Finish help strings with "."
* Improve wording and capitalization

Change-Id: I461589e4d20be6085281962ebf6e99262a58c761
Remove unused admin_context from conductor manager

This variable was used nowhere, plus it referenced three config
variables which were also in the sample config file that Conductor
doesn't need.

Change-Id: I08ffe578158c73d387112b6c05b7ab2c6cae833b
fix traceback when default_version is not in the database

This commit lets the right error be raised which ends up in the cli as
e.g:

Datastore version '5.5' cannot be found.

Change-Id: I636bf43d135b2143f2a3bd1878215d7ec270330e
Closes-Bug: #1278965
Use consistent timeouts for integration tests

Closes-Bug: #1281254
Change-Id: Ifc16709c68b059b0bf5e6872236970e012ee25bc
Merge "fix traceback when default_version is not in the database"
Merge "Improve help strings"
Call debug_utils.setup() in all entry points

Closes-Bug: #1281442
Change-Id: I449ab355d3b4d8f6177e164e6e736528b70f06da
Remove extraneous vim configuration comments

Remove vim setting, Remove line containing:
comment - # vim: tabstop=4 shiftwidth=4 softtabstop=4

at the top of source code files, except for files in
openstack/common.

Change-Id: I5e2aad6dca8407890fc3c2afbda541bd4f124ea8
Closes-Bug: #1229324
Merge "Use consistent timeouts for integration tests"
Merge "Remove unused admin_context from conductor manager"
Merge "Call debug_utils.setup() in all entry points"
Merge "Remove extraneous vim configuration comments"
Allow db instance conditional logging

Reason:
- config.template misses logging section;
- non-optional mysql logging is a performance killer (according to docs)

Changes:
- conditional logging via rendering config.template;
- tests.

Partionaly implements: blueprint dbinstance-log

Change-Id: I0ad7def9ec041c4a83a89558b7b3db389e03623a
Allow log files audit

Reason:
- audit process is required for database management

Changes:
- adding functionality for instance database log managements
dblog-create, dblog-list, dblog-show;
- tests.

Change-Id: I1485f172f55e98991537f835e3495f93bf91b11c
Implements: blueprint dbinstance-log