Using click's "required" argument checks to see if the
value is passed or not. Therefore we can check before
flag before running a command. So we can remove duplicate
code.
Story: 2010867
Task: 48556
Change-Id: Ie07d8ff921c8b883d323f8bbc062ce1130039848
Signed-off-by: Charles Short <charles.short@windriver.com>