doc update: add references to yaml local include files

Change-Id: I3e30d4f988ae8d9506d6975d1f8aa913eab1abea
Added recursive option

Now you can organize your yaml files into subdirectories and apply them
all just passing --recursive option or adding the proper configuration
file option.

In adding support for multiple paths the Builder.load_files method was
reworked to be backward compatible with individual paths or file-like
objects, while also now handling being passed a list of paths or
file-like objects to be parsed.

Change-Id: I126751e347622716c592c6ed1a57b8acb7bf79a4
wrappers: fixed locks for empty collection

it caused "Locks" checkbox to be checked, and it picked up first lock
from selectbox as default.

Change-Id: I13fdf104c6c32b783fb539f8947e3e071cb9788c
Signed-off-by: Lukas Bednar <lbednar@redhat.com>
Extend trigger_builds functionality

To support fan-out and conditional trigger behaviour with
Jenkins Parameterized Trigger Plugin add following attributes:

* Config for failTriggerOnMissing
* Parameter factories

Change-Id: I3755ed32779e64e7aee7a55a00c683edff6bbbd8
Merge "Extend trigger_builds functionality"
Merge "Added recursive option"
Merge "doc update: add references to yaml local include files"