[Grid] Enabling IPv6, fixes #7541

Also enabling `--detect-drivers` for nodes

Author: diemol

java/server/src/org/openqa/selenium/events/zeromq/BoundZmqEventBus.java

@@ -46,10 +46,12 @@ class BoundZmqEventBus implements EventBus {
     LOG.info(String.format("XPUB binding to %s, XSUB binding to %s", xpubAddr, xsubAddr));
 
     xpub = context.createSocket(SocketType.XPUB);
+    xpub.setIPv6(true);
     xpub.setImmediate(true);
     xpub.bind(xpubAddr.bindTo);
 
     xsub = context.createSocket(SocketType.XSUB);
+    xsub.setIPv6(true);
     xsub.setImmediate(true);
     xsub.bind(xsubAddr.bindTo);
 

java/server/src/org/openqa/selenium/events/zeromq/UnboundEventBus.java

@@ -64,10 +64,12 @@ class UnboundZmqEventBus implements EventBus {
     LOG.info(String.format("Connecting to %s and %s", publishConnection, subscribeConnection));
 
     sub = context.createSocket(SocketType.SUB);
+    sub.setIPv6(true);
     sub.connect(publishConnection);
     sub.subscribe(new byte[0]);
 
     pub = context.createSocket(SocketType.PUB);
+    pub.setIPv6(true);
     pub.connect(subscribeConnection);
 
     ZMQ.Poller poller = context.createPoller(1);

java/server/src/org/openqa/selenium/grid/node/httpd/NodeFlags.java

@@ -27,5 +27,5 @@ class NodeFlags {
       names = {"--detect-drivers"},
       description = "Autodetect which drivers are available on the current system, and add them to the node.")
   @ConfigValue(section = "node", name = "detect-drivers")
-  public boolean autoconfigure;
+  public boolean autoconfigure = true;
 }