This adds release notes for the following commits:

$ git log --oneline --no-merges 0.15.0..HEAD
f7cdc3e Glance image delete output
a3eaafe Updated from global requirements
e99e0c8 Change oslo.utils to oslo_utils
96ff6e4 Return 130 for keyboard interrupt
db743e3 Ignore NoneType when encoding headers
869e6ac Use utils.exit rather than print+sys.exit
5ec4a24 Remove uuidutils from openstack-common
93c9bc1 Add a `--limit` parameter to list operations
9daada9 Fixed CLI help for bash-completion
878bdcb Remove openstack.common.importutils
b818826 Remove openstack.common.strutils
35c9b65 Adds basic examples of v2 API usage
363b170 Sync latest apiclient from oslo-inc
f210751 Close streamed requests explicitly
62df6c6 Handle HTTP byte returns in python 3
aebbcff Updated from global requirements
cb046bc Add validation to --property-filter in v1 shell
6eaaad5 Make non-boolean check strict
9054324 Disable progress bar if image is piped into client
df02ee8 Fix Requests breaking download progress bar
e3600ad Fix broken-pipe seen in glance-api
b96f613 Update HTTPS certificate handling for pep-0476
8e8dde2 Output clear error message on invalid api version
bd73a54 Add os_ prefix to project_domain_name/id
465c5ce Curl statements to include globoff for IPv6 URLs
9dcf3f1 Reduce the set of supported client SSL ciphers

Change-Id: Ib97fd745f1f6761b88246351ce2c63d11ad29b01

Deleting an already deleted image using admin user is throwing an
error "404 Not Found" which is confusing. Deleting an image that does
not exist throws "No image with a name or ID of 'image-id' exists."

Updated the code so that trying to delete an already deleted image
throws "No image with an ID of 'image-id' exists." error.

Closes-Bug: #1333119
Change-Id: I8f9a6174663337a0f48aafa029a4339c32eb2134
Co-Authored-By: Abhishek Talwar <abhishek.talwar@tcs.com>
Co-Authored-By: Kamil Rykowski <kamil.rykowski@intel.com>

Change-Id: I06268c3e638716366c38181cb6364a2fce7bafee