another fix to vlans config
another fix to vlans config

Change-Id: I5b809689eadb86f8be9052714ef79598d5b39b2c
Signed-off-by: Yaroslav Brustinov <58a360e80ce67a871f076847d255453a99d22580@cisco.com>

dimagol/trex-core,kisel/trex-core,kisel/trex-core,kisel/trex-core,kisel/trex-core,dimagol/trex-core,dimagol/trex-core,dimagol/trex-core,dimagol/trex-core,dimagol/trex-core,kisel/trex-core,kisel/trex-core