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/apex/canned_fs_config b/apex/canned_fs_config
index ce942d3..5afd9d6 100644
--- a/apex/canned_fs_config
+++ b/apex/canned_fs_config
@@ -1 +1 @@
-/bin/virtualizationservice 0 2000 0755 capabilities=0x1000000  # CAP_SYS_RESOURCE
+/bin/virtualizationservice 0 2000 0755 capabilities=0x1000001  # CAP_CHOWN, CAP_SYS_RESOURCE