Run regression tests verbosely.

cts-fencing is failing with a timeout error, but there's no logging
available to see what could possibly be timing out.  I haven't been able
to reproduce this problem locally, and it didn't happen with the
previous RHEL 10 build (though, it does happen when running tests for
just this patch too), so if we can't see what is happening in CI, we
won't be able to figure it out.

Related: RHEL-106594

tests/tests.yml

@@ -8,7 +8,7 @@
     tests:
     - cts-regression:
         dir: .
-        run: /usr/share/pacemaker/tests/cts-regression cli scheduler fencing
+        run: /usr/share/pacemaker/tests/cts-regression -V cli scheduler fencing
     required_packages:
     - pacemaker
     - pacemaker-cts