run-tests: --inotify: use inotify.appendpid to append pids to $DAEMON_PIDS

Introduce a inotify.appendpid configuration possibility that appends pids
to inotify.pidfile when set to True.

hgext/inotify/server.py

@@ -482,5 +482,8 b' def start(ui, dirstate, root, opts):'
 
     service = service()
     logfile = ui.config('inotify', 'log')
+
+    appendpid = ui.configbool('inotify', 'appendpid', False)
+
     cmdutil.service(opts, initfn=service.init, runfn=service.run,
-                    logfile=logfile, runargs=runargs)
+                    logfile=logfile, runargs=runargs, appendpid=appendpid)

tests/run-tests.py

@@ -476,6 +476,7 b' def runone(options, test, skips, fails):'
         hgrc.write('inotify=\n')
         hgrc.write('[inotify]\n')
         hgrc.write('pidfile=%s\n' % DAEMON_PIDS)
+        hgrc.write('appendpid=True\n')
     hgrc.close()
 
     err = os.path.join(TESTDIR, test+".err")