openjdk: hotspot VM Testbase tests status in aqa-tests

[zzambers]

This is umbrella issue which is summarizing progress of adding VM testbase openjdk hotspot tests into aqa-tests.

VM testbase tests were open sourced and added to JDK 11 by Oracle. They are part of hotspot tests, where they live in separate directory. See hotspot's TEST.groups file in openjdk sources.

group	PR	Issue	Status	Notes
vm_compiler	#6616	N/A	DONE
vm_gc	#6619	N/A	DONE	Can be broken into smaller groups, if desired
vm_defmeth	#6646	N/A	DONE
vm_metaspace	#6702	#6712	OPEN
vm_mlvm	#6714	#6713	OPEN
nsk_monitoring	N/A	N/A	TODO
nsk_jdi	N/A	N/A	TODO
nsk_sysdict	N/A	N/A	TODO
nsk_jvmti	N/A	N/A	TODO
nsk_jdwp	N/A	N/A	TODO
nsk_stress	N/A	N/A	TODO
nsk_aod	N/A	N/A	TODO
nsk_jdb	N/A	N/A	TODO

[zzambers]

@jiekang @smlambert I have created summary with status of hotspot VM testbase tests in aqa. I would like to gradually add all of these to aqa.