tests: port test-ui-verbosity.py to Python 3

# skip-blame just some bytes/string wrangling

Differential Revision: https://phab.mercurial-scm.org/D3515

contrib/python3-whitelist

@@ -451,6 +451,7 b' test-tags.t'
 test-template-engine.t
 test-treemanifest.t
 test-ui-color.py
+test-ui-verbosity.py
 test-unamend.t
 test-uncommit.t
 test-unified-test.t

tests/test-ui-verbosity.py

@@ -38,9 +38,9 b' for i in xrange(64):'
 
     u = uimod.ui.load()
     if cmd_quiet or cmd_debug or cmd_verbose:
-        u.setconfig('ui', 'quiet', str(bool(cmd_quiet)))
-        u.setconfig('ui', 'verbose', str(bool(cmd_verbose)))
-        u.setconfig('ui', 'debug', str(bool(cmd_debug)))
+        u.setconfig(b'ui', b'quiet', pycompat.bytestr(bool(cmd_quiet)))
+        u.setconfig(b'ui', b'verbose', pycompat.bytestr(bool(cmd_verbose)))
+        u.setconfig(b'ui', b'debug', pycompat.bytestr(bool(cmd_debug)))
 
     check = ''
     if u.debugflag: