K 10
svn:author
V 4
ngie
K 8
svn:date
V 27
2017-01-31T06:12:51.865145Z
K 7
svn:log
V 415
Wait for /dev/ggate* to appear after calling `ggatel create` in :ggatel_{file,md}

The test assumed that `ggatel create` created a device on completion, but that's
incorrect. This squashes the race by waiting for the device to appear, as
`ggatel create` daemonizes before issuing an ioctl to geom_gate(4) if not called
with `-v`.

Discussed with:	asomers
MFC after:	1 week
PR:		204616
Sponsored by:	Dell EMC Isilon

END