zuul-client will also look by default for the
$XDG_CONFIG_HOME/zuul/client.conf file when looking for user settings.
Change-Id: I60d59fceb1d4e4d767ca9e952a8ecc1630eba0a8
Allow user to set a tenant in one of the configuration file's
subsections, so that they don't have to provide the argument to the CLI
all the time.
Fix the API builds() call not building the API URL properly for a
white-labeled root URL.
Change-Id: Ib3b8b2be07ed580ac9f48738b9157a5d0e4d5e70
zuul-client can be used to encrypt a secret that can be then used in a
project's jobs.
Also improve the documentation section about using a configuration file.
Change-Id: I10e56883f0b24ac429051af36f9bf58c7594c0ed