Add release notes for 0.14.0 - 0.14.2

These were not written at the time of release, so this catches up with
the latest version.

For reference:

    $ git log --oneline --no-merges 0.13.0..0.14.0
    33dcea8 Support for Metadata Definitions Catalog API
    16077d9 Catch new urllib3 exception: ProtocolError
    6dda6f3 Fix error when logging http response with python 3
    d6498b6 Ensure server's SSL cert is validated
    9a53c1f Enable osprofiler interface in glanceclient shell
    69361a1 Hide stderr noise in test output
    1dfce53 Remove deprecated commands from shell
    867e4ca Normalize glanceclient requested service url
    4494853 Fix glance-client to work with IPv6 controllers
    f15dc6b Add support for Keystone v3
    7736349 Update theme for docs
    e79031b Add a tox job for generating docs
    68c1d1f Don't stream non-binary requests
    f75a810 Use a correctly formatted example location in help
    dbb242b Replace old httpclient with requests
    1db17aa Enable F841
    797d101 Resolving the performance issue for image listing of v2 API
    e305dad Add profiling support to glanceclinet
    9b9f3be Use immutable arg rather mutable arg
    1c46c76 Add CONTRIBUTING.rst

    $ git log --oneline --no-merges 0.14.0..0.14.1                                                                                                                                                                                                                                                                                                                                                                                      f980fc5 Update how tokens are redacted
    ba19a53 Handle UnicodeDecodeError in log_http_response
    4d6b94a Print traceback to stderr if --debug is set
    61e4eba Updated from global requirements
    97b1506 Fix v2 requests to non-bleeding edge servers
    9fbc313 Work toward Python 3.4 support and testing
    d97f03e Import missing gettextutils._ in shell.py
    4631b76 Fix indentation in tox.ini
    cda8c4d Downgrade log message for http request failures
    8770586 CLI image-update gives a wrong help on '--tags' param

    $ git log --oneline --no-merges 0.14.1..0.14.2
    052904b Don't replace the https handler in the poolmanager
    5f4966d Remove network_utils
    2b567cf Skip non-base properties in patch method
    7ef1b7c Adds support for Glance Tasks calls
    1511c86 Fix the ordering of assertEqual arguments
    ab07caf Stop using intersphinx
    929a72e Default to system CA bundle if no CA certificate is provided

Change-Id: Ie4195fa9ad7f5f45c387fda4b1db4fbce7a3f98c
Merge "Add release notes for 0.14.0 - 0.14.2"