labs: tweak dpkg-statoveride call
labs: tweak dpkg-statoveride call

Turn code comment into log output, and check the new permission
settings after having changed them.

Change-Id: Ibf136a3193a6520989a6875afd933095ba70aa76

Nabs007/training-guides,openstack/training-guides,harrisonfeng/training-guides,openstack/training-guides,Nabs007/training-guides,harrisonfeng/training-guides,harrisonfeng/training-guides,Nabs007/training-guides