mirror.starlingx.cengn.ca no longer exists. CENGN is kindly forwarding
requests to the new location mirror.starlingx.windriver.com for now, but
that will only last a few months. We need to replace all the references
with the new URL.
I will also remove as many 'cengn' references as possible, replacing them
with 'stx_mirror'
Partial-Bug: 2033555
Signed-off-by: Scott Little <scott.little@windriver.com>
Signed-off-by: Davlet Panech <davlet.panech@windriver.com>
Change-Id: I9d1396d603dcd3fc54bd4496fd332de278aa70da
130c43619b