autotest: Restore control file in network_WiFi_CSADisconnect

The controle file of network_WiFi_CSADisconnect was deleted in
CL:268924. This CL retores the control file.
I also added the ATTRIBUTES tag in the control file since the
SUITE tag is phasing out.

BUG=chromium:522119
TEST=Run this test on a peppy device.
CQ-DEPEND=CL:294175

Change-Id: Ic6c4eb0dce315828858563e77fdeed714e0df8c4
Reviewed-on: https://chromium-review.googlesource.com/294277
Reviewed-by: Zeping Qiu <zqiu@chromium.org>
Tested-by: Ningyuan Wang <nywang@chromium.org>
Commit-Queue: Ningyuan Wang <nywang@chromium.org>
1 file changed