Access rules are access rules, not application credentials.

Change-Id: I74d05f11ec186283e5a86d92dcbfe4eb24130eee

This commit introduces the --access-rules option for 'application
credential create' as well as new 'access rule' commands for listing,
showing, and deleting access rules.

bp whitelist-extension-for-app-creds

Change-Id: I04834b2874ec2a70da456a380b5bef03a392effa

1. As mentioned in [1], we should avoid using six.iteritems to achieve
   iterators. We can use dict.items instead, as it will return iterators
   in PY3 as well. And dict.items/keys will more readable.

2. In py2, the performance about list should be negligible,
   see the link [2].

[1] https://wiki.openstack.org/wiki/Python3
[2] http://lists.openstack.org/pipermail/openstack-dev/2015-June/066391.html

Co-Authored-By: Akihiro Motoki <amotoki@gmail.com>
Change-Id: I4b9edb326444264c0f6c4ad281acaac356a07e85
Implements: blueprint replace-iteritems-with-items

$namespace = openstack.network.v2

The subcommand documents for $namespace were hardcoded and thus prone to
drift over time. This commit removes the hardcoded content and uses the
autoprogram-cliff directive to generate them automatically from the
subcommand configuration classes.

This one turned out to be quite involved, because we support both
neutron and nova-network. When running in a real cloud, the command
classes detect whether the neutron service is present, assume
nova-network if that service is not found, and only add parser options
relevant to the detected service. But the docs need to present both sets
of options. This was easy enough when they were hardcoded, but required
a bit of additional infrastructure for generated docs.

Change-Id: I426261eb1d86bcc68656aabd61f10b7f082da402

The patch https://review.opendev.org/#/c/673389/
introduced a regression by changing the osc-lib
interface.

The patch
https://review.opendev.org/683119
changes the exception from the generic CommandError
back to a specific Forbidden exception.

This patch catches this exception and passes on, i.e.
re-implements the same behavior as before.

Story: 2006547

Change-Id: I17b1ec7abaa5b0828ccbcad40bd928565c5c59fb
Signed-off-by: Andreas Florath <Andreas.Florath@telekom.de>

This patch introduces a new option --parent into project list,
to specify a parent project to filter projects which has
the given project as their parent.

Depends-on: https://review.opendev.org/#/c/677101
Change-Id: I6725262cf040e0ec6ceca9cf0462ce59224049c6

Partial-Bug: #1687955
Partially implement blueprint osc-formattable-columns

Change-Id: Ia13314a012b3a7363ffb24a13c79c6ecdff1ed7b