Define security labeling for isolated processes.

Used when an app service is declared with android:isolatedProcess="true".
Place such processes in a separate domain, and further isolate them
from each other via categories.

Change-Id: I1d64f8278f0619eedb448f9a741f1d2c31985325
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
diff --git a/seapp_contexts b/seapp_contexts
index 71eca75..0050cc2 100644
--- a/seapp_contexts
+++ b/seapp_contexts
@@ -39,3 +39,4 @@
 user=app_* seinfo=media domain=media_app type=platform_app_data_file
 user=app_* seinfo=release domain=release_app type=platform_app_data_file
 user=app_* seinfo=release name=com.android.browser domain=browser_app type=platform_app_data_file
+user=isolated domain=isolated_app levelFromUid=true