Start using virtmgr for running VMs

Make the final changes to start running VMs using virtmgr:

  * Have virtualizationservice host the VirtualizationServiceInternal
    AIDL service.

  * Remove memlock rlimit of virtmgr (instead of virtualizationservice)
    via a method on VirtualizationServiceInternal.

  * Have VirtualizationServiceInternal create the VM's temporary folder
    and change its owner to the client's UID. The files keep the same
    virtualizationservice_data_file SELinux label, but are now owned by
    the client's virtmgr instance. To this end, virtualizationservice
    requires CAP_CHOWN.

  * Switch all users to the new vmclient/javalib API for spawning
    virtmgr.

Bug: 245727626
Test: atest -p packages/modules/Virtualization:avf-presubmit
Change-Id: I93b2cadb67a8c125e1a86f9c1ba9cb98336f0cd4
diff --git a/compos/verify/verify.rs b/compos/verify/verify.rs
index 5b7a8ad..745d5e9 100644
--- a/compos/verify/verify.rs
+++ b/compos/verify/verify.rs
@@ -106,7 +106,8 @@
     // We need to start the thread pool to be able to receive Binder callbacks
     ProcessState::start_thread_pool();
 
-    let virtualization_service = vmclient::connect()?;
+    let virtmgr = vmclient::VirtualizationService::new()?;
+    let virtualization_service = virtmgr.connect()?;
     let vm_instance = ComposClient::start(
         &*virtualization_service,
         instance_image,