Parsed runqemu output to get guest network configuration
if it's not present in runqemu command line.
[YOCTO #10833]
(From OE-Core rev: d4d7ed48c1cff1351ddc2f60bcfa153c373a8ab8)
Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>