[Plugin] fix: increase max number of ssh connections

openmole/plugins/org.openmole.plugin.environment.ssh/src/main/scala/org/openmole/plugin/environment/ssh/SSHEnvironment.scala

@@ -39,7 +39,7 @@ import scala.ref.WeakReference
 object SSHEnvironment extends JavaLogger {
 
   val maxLocalOperations = ConfigurationLocation("ClusterEnvironment", "MaxLocalOperations", Some(100))
-  val maxConnections = ConfigurationLocation("SSHEnvironment", "MaxConnections", Some(5))
+  val maxConnections = ConfigurationLocation("SSHEnvironment", "MaxConnections", Some(50))
 
   val updateInterval = ConfigurationLocation("SSHEnvironment", "UpdateInterval", Some(10 seconds))
   val timeOut = ConfigurationLocation("SSHEnvironment", "Timeout", Some(1 minutes))