x86: test exit while vmcs02 is loaded

Before applying "KVM: nVMX: fix lifetime issues for vmcs0", exiting while
vmcs02 was loaded would trigger a VM_BUG_ON.

Filter out exit_monitor_from_l2_test when running the full vmx test
suite (i.e. the "[vmx]" test suite in unittest.cfg). Since
exit_monitor_from_l2_test causes the VM to shutdown, many of the tests
in vmx_tests.c end up getting skipped.

Signed-off-by: Peter Feiner <pfeiner@google.com>
Signed-off-by: David Matlack <dmatlack@google.com>
Message-Id: <20170421005004.137260-7-dmatlack@google.com>
Message-Id: <20170421005004.137260-8-dmatlack@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>