Pass arch into tmt context
Now a request with multiple arches passed via --arch parameter will be passed into tmt context.arch respectfully. In case user specifies their own arch for tmt context via -c parameter, user choice will be respected.
Now a request with multiple arches passed via --arch parameter will be passed into tmt context.arch respectfully. In case user specifies their own arch for tmt context via -c parameter, user choice will be respected.