Configure a ControlPort for every tor instance run by chutney

(Not just for clients.)

Implements feature #19765.

torrc_templates/client.tmpl

@@ -1,6 +1,5 @@
 ${include:common.i}
 SocksPort $socksport
-ControlPort $controlport
 CookieAuthentication 1
 
 #NOTE: Setting TestingClientConsensusDownloadSchedule doesn't

torrc_templates/common.i

@@ -46,3 +46,5 @@ ProtocolWarnings 1
 SafeLogging 0
 DisableDebuggerAttachment 0
 ${authorities}
+
+ControlPort $controlport