Rename VirtManager to VirtualizationService.

Bug: 188042280
Test: atest VirtualizationTestCases
Change-Id: Ia46a0dda923cb30382cbcba64aeb569685041d2b
diff --git a/apex/com.android.virt-file_contexts b/apex/com.android.virt-file_contexts
index 4703eba..ad8d55c 100644
--- a/apex/com.android.virt-file_contexts
+++ b/apex/com.android.virt-file_contexts
@@ -1,3 +1,3 @@
-(/.*)?                   u:object_r:system_file:s0
-/bin/crosvm              u:object_r:crosvm_exec:s0
-/bin/virtmanager         u:object_r:virtmanager_exec:s0
+(/.*)?                     u:object_r:system_file:s0
+/bin/crosvm                u:object_r:crosvm_exec:s0
+/bin/virtualizationservice u:object_r:virtualizationservice_exec:s0