[tests] Reduce NodeConn connection logging from info to debug

Author: jnewbery

test/functional/test_framework/mininode.py

@@ -86,7 +86,7 @@ def peer_connect(self, dstaddr, dstport, net="regtest"):
         self.network = net
         self.disconnect = False
 
-        logger.info('Connecting to Bitcoin Node: %s:%d' % (self.dstaddr, self.dstport))
+        logger.debug('Connecting to Bitcoin Node: %s:%d' % (self.dstaddr, self.dstport))
 
         try:
             self.connect((dstaddr, dstport))