Giving centos8 tinyipa vote rights again.
Fixing up some of the test scripts for CentOS 8.
- kvm_stats util has been moved to kernel-tools, the package
qemu-kvm-tools doesn't exist anymore
- qemu-system-x86 doesn't exist anymore, therefore we run
/usr/libexec/qemu-kvm instead of /bin/qemu-system-x86_64
- installing package trousers to add tss user and group
needed by libvirt
- Stop setting CPU mode - allow libvirt to select. host-model was failing on
libvirt 4.5.0 on CentOS 8 due to
https://bugzilla.redhat.com/show_bug.cgi?id=1804224
Change-Id: I9488dcb8af70ea06de37ffec94620f8681c21944
5f9ba09c5e