Regression

SGSN_Tests.TC_attach_rau_a_b (from Titan)

Failing for the past 1 build (Since #88 )

"VTY Timeout for prompt: enable"
      SGSN_Tests.ttcn:3934 SGSN_Tests control part
      SGSN_Tests.ttcn:2752 TC_attach_rau_a_b testcase