virttest.utils_net: Don't remove virt DB lock upon unlocking

This might cause race conditions, so in doubt, don't remove.

Signed-off-by: Lucas Meneghel Rodrigues <lmr@redhat.com>
virttest.utils_net: Clean DB lock file on clean_tmp_files()

Signed-off-by: Lucas Meneghel Rodrigues <lmr@redhat.com>
virttest.qemu_vm: Don't delete vm create lock file on unlock

As it's a source for race conditions.

Signed-off-by: Lucas Meneghel Rodrigues <lmr@redhat.com>
virttest.standalone_test: Clean VM create lock on clean_tmp_files()

Signed-off-by: Lucas Meneghel Rodrigues <lmr@redhat.com>
Merge pull request #1176 from autotest/bugfixes

Cleanup bugfixes