Increase timeout on network stability test
Increase timeout on network stability test

Resolves  openbmc/openbmc-test-automation#1067
Change-Id: I63308bd0ce33aedd6dd44366e5ade19941df541f
Signed-off-by: Steven Sombar <fb37bb6ac5c2258e1cbf80690dea88925949957e@us.ibm.com>

openbmc/openbmc-test-automation,openbmc/openbmc-test-automation