[LTP] [PATCH 2/2] tst_net.sh: Rename variables to comply name policy

[Petr Vorel]

Hi,

> internal variables are lower case, with _tst_net prefix

> Signed-off-by: Petr Vorel <pvorel@suse.cz>
Merged, with Alexey's ack.

Kind regards,
Petr