Revert "cleanup potentially installed older oslo.config"

Icehouse is for long behind our back, so let's remove that hack.

Conflicts:
	lib/oslo

This reverts commit db5fadb5cb768820df54fc3d1c7428a57b511582.

Change-Id: I06d3b0a8779ba51e05c439832ef3b7dbdc97ded1
Merge "Revert "cleanup potentially installed older oslo.config""