Fix dont-allow-camera in Email DPM

* We weren't checking for it in determining whether our policies
  were active; because of this, we never actually SET the policy
  in the DPM

Bug: 5193399
Change-Id: I276901be21be681f66891f5374ec58cf1ea7b4be

src/com/android/email/SecurityPolicy.java

@@ -411,6 +411,9 @@ public class SecurityPolicy {
                     reasons |= INACTIVE_NEED_ENCRYPTION;
                 }
             }
+            if (policy.mDontAllowCamera && !dpm.getCameraDisabled(mAdminName)) {
+                reasons |= INACTIVE_NEED_CONFIGURATION;
+            }
             // password failures are counted locally - no test required here
             // no check required for remote wipe (it's supported, if we're the admin)