Fixed up an error message
Fixed up an error message

Removed the comma and added spaces

Change-Id: I04977f955ed6a4575fea17b8e97b675a483cc7a9

varunarya10/tempest-lib,JioCloud/tempest-lib,afaheem88/tempest-lib,mtreinish/tempest-lib,cneill/tempest-lib,sorenh/tempest-lib