Keystore 2.0: Add permissions and policy for user manager AIDL.

Bug: 176123105
Test: User can set a password and unlock the phone.
Change-Id: I96c033328eb360413e82e82c0c69210dea2ddac9
diff --git a/private/access_vectors b/private/access_vectors
index 1420360..a02a2a8 100644
--- a/private/access_vectors
+++ b/private/access_vectors
@@ -714,7 +714,10 @@
 class keystore2
 {
 	add_auth
+	change_password
+	change_user
 	clear_ns
+	clear_uid
 	get_state
 	list
 	lock
diff --git a/private/compat/30.0/30.0.ignore.cil b/private/compat/30.0/30.0.ignore.cil
index 3eace95..0e572a9 100644
--- a/private/compat/30.0/30.0.ignore.cil
+++ b/private/compat/30.0/30.0.ignore.cil
@@ -98,6 +98,7 @@
     texttospeech_service
     transformer_service
     update_engine_stable_service
+    usermanager_service
     userspace_reboot_metadata_file
     vcn_management_service
     vibrator_manager_service
diff --git a/private/service_contexts b/private/service_contexts
index 502403c..0c6e475 100644
--- a/private/service_contexts
+++ b/private/service_contexts
@@ -33,6 +33,7 @@
 android.security.identity                 u:object_r:credstore_service:s0
 android.security.keystore                 u:object_r:keystore_service:s0
 android.security.remoteprovisioning       u:object_r:remoteprovisioning_service:s0
+android.security.usermanager              u:object_r:usermanager_service:s0
 android.service.gatekeeper.IGateKeeperService    u:object_r:gatekeeper_service:s0
 android.system.keystore2                  u:object_r:keystore_service:s0
 app_binding                               u:object_r:app_binding_service:s0
diff --git a/private/system_server.te b/private/system_server.te
index e1919e2..a3e1f97 100644
--- a/private/system_server.te
+++ b/private/system_server.te
@@ -824,6 +824,7 @@
 allow system_server storaged_service:service_manager find;
 allow system_server surfaceflinger_service:service_manager find;
 allow system_server update_engine_service:service_manager find;
+allow system_server usermanager_service:service_manager find;
 allow system_server vold_service:service_manager find;
 allow system_server wifinl80211_service:service_manager find;
 userdebug_or_eng(`
@@ -855,7 +856,10 @@
 
 allow system_server keystore:keystore2 {
 	add_auth
+	change_password
+	change_user
 	clear_ns
+	clear_uid
 	get_state
 	lock
 	reset