Fixed mistral experimental job
Fixed mistral experimental job

give root access to docker command

Change-Id: I6817b3341d5a9074ab2ac0228c3ab48e19f1cbb8

Tesora/tesora-project-config,noorul/os-project-config,openstack-infra/project-config,noorul/os-project-config,dongwenjuan/project-config,openstack-infra/project-config,Tesora/tesora-project-config,dongwenjuan/project-config