Expose provider min/max ports to stf local.

lib/cli.js

@@ -882,6 +882,14 @@ program
     , 'provider name (or os.hostname())'
     , String
     , os.hostname())
+  .option('--provider-min-port <port>'
+    , 'minimum port number for worker use'
+    , Number
+    , 7400)
+  .option('--provider-max-port <port>'
+    , 'maximum port number for worker use'
+    , Number
+    , 7700)
   .option('-t, --group-timeout <seconds>'
     , 'group timeout'
     , Number
@@ -956,6 +964,8 @@ program
       , procutil.fork(__filename, [
             'provider'
           , '--name', options.provider
+          , '--min-port', options.providerMinPort
+          , '--max-port', options.providerMaxPort
           , '--connect-sub', options.bindDevPub
           , '--connect-push', options.bindDevPull
           , '--group-timeout', options.groupTimeout