regression: add small delay if load clean config fails
regression: add small delay if load clean config fails

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