Instead of duplicating the same log statement throughout
the code, the same logic can be provided by a shared decorator
that abstracts away the logging capability and unifies it behind
a common function instead.
Change-Id: Icc63bced7347c8bbf0299a4c5821425a10892a79
Create a `configuration show` command that displays the current
configuration of the CLI. Different configurations can be
displayed using options such as --os-cloud. Passwords and
tokens are redacted by default unless the --unmask
option is specified.
Closes-Bug: #1476729
Change-Id: I0792365d0c5fa526cd09c0ed88c6bb1e2cb813a7