Cleanup privileged attribut usage in containers

Rally and Tempest containers doesn't required "privileged" attribut.
This must be cleanup.

Change-Id: Ic8de5162523314dd78dad7d25b36145350749bcc

ansible/roles/rally/handlers/main.yml

@@ -12,7 +12,6 @@
     common_options: "{{ docker_common_options }}"
     name: "{{ service.container_name }}"
     image: "{{ service.image }}"
-    privileged: "{{ service.privileged | default(False) }}"
     volumes: "{{ service.volumes|reject('equalto', '')|list }}"
   when:
     - action != "config"

ansible/roles/tempest/handlers/main.yml

@@ -11,7 +11,6 @@
     common_options: "{{ docker_common_options }}"
     name: "{{ service.container_name }}"
     image: "{{ service.image }}"
-    privileged: "{{ service.privileged | default(False) }}"
     volumes: "{{ service.volumes|reject('equalto', '')|list }}"
   when:
     - action != "config"