Set PRIVILEGED=true for non_destructive tests. (#17733)

This should allow test_mount tests to run on Shippable.

shippable.yml

@@ -26,15 +26,15 @@ matrix:
     - env: TEST=integration TARGET=destructive IMAGE=ansible/ansible:ubuntu1604
     - env: TEST=integration TARGET=destructive IMAGE=ansible/ansible:ubuntu1604py3 PYTHON3=1
 
-    - env: TEST=integration TARGET=non_destructive IMAGE=ansible/ansible:centos6
-    - env: TEST=integration TARGET=non_destructive IMAGE=ansible/ansible:centos7
-    - env: TEST=integration TARGET=non_destructive IMAGE=ansible/ansible:fedora-rawhide
-    - env: TEST=integration TARGET=non_destructive IMAGE=ansible/ansible:fedora23
-    - env: TEST=integration TARGET=non_destructive IMAGE=ansible/ansible:opensuseleap
-    - env: TEST=integration TARGET=non_destructive IMAGE=ansible/ansible:ubuntu1204
-    - env: TEST=integration TARGET=non_destructive IMAGE=ansible/ansible:ubuntu1404
-    - env: TEST=integration TARGET=non_destructive IMAGE=ansible/ansible:ubuntu1604
-    - env: TEST=integration TARGET=non_destructive IMAGE=ansible/ansible:ubuntu1604py3 PYTHON3=1
+    - env: TEST=integration TARGET=non_destructive IMAGE=ansible/ansible:centos6 PRIVILEGED=true
+    - env: TEST=integration TARGET=non_destructive IMAGE=ansible/ansible:centos7 PRIVILEGED=true
+    - env: TEST=integration TARGET=non_destructive IMAGE=ansible/ansible:fedora-rawhide PRIVILEGED=true
+    - env: TEST=integration TARGET=non_destructive IMAGE=ansible/ansible:fedora23 PRIVILEGED=true
+    - env: TEST=integration TARGET=non_destructive IMAGE=ansible/ansible:opensuseleap PRIVILEGED=true
+    - env: TEST=integration TARGET=non_destructive IMAGE=ansible/ansible:ubuntu1204 PRIVILEGED=true
+    - env: TEST=integration TARGET=non_destructive IMAGE=ansible/ansible:ubuntu1404 PRIVILEGED=true
+    - env: TEST=integration TARGET=non_destructive IMAGE=ansible/ansible:ubuntu1604 PRIVILEGED=true
+    - env: TEST=integration TARGET=non_destructive IMAGE=ansible/ansible:ubuntu1604py3 PYTHON3=1 PRIVILEGED=true
 
     - env: TEST=integration TARGET=other IMAGE=ansible/ansible:centos6
     - env: TEST=integration TARGET=other IMAGE=ansible/ansible:centos7