Added configuration for PIM interfaces.

Now the PIM application requires PIM Interface configuration for each interface
that will have PIM enabled (no longer uses all ONOS interfaces). The
interface-specific PIM parameters can be tuned.

Change-Id: Ibc284fdbe1b3aa4da48097b3e92470bce4f349a7
diff --git a/apps/pim/src/main/java/org/onosproject/pim/cli/PimInterfacesListCommand.java b/apps/pim/src/main/java/org/onosproject/pim/cli/PimInterfacesListCommand.java
new file mode 100644
index 0000000..c83871e
--- /dev/null
+++ b/apps/pim/src/main/java/org/onosproject/pim/cli/PimInterfacesListCommand.java
@@ -0,0 +1,47 @@
+/*
+ * Copyright 2016 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.pim.cli;
+
+import org.apache.karaf.shell.commands.Command;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.pim.impl.PIMInterface;
+import org.onosproject.pim.impl.PIMInterfaceService;
+
+import java.util.Set;
+
+/**
+ * Lists the interfaces where PIM is enabled.
+ */
+@Command(scope = "onos", name = "pim-interfaces",
+        description = "Lists the interfaces where PIM is enabled")
+public class PimInterfacesListCommand extends AbstractShellCommand {
+
+    private static final String FORMAT = "interfaceName=%s, holdTime=%s, priority=%s, genId=%s";
+
+    @Override
+    protected void execute() {
+        PIMInterfaceService interfaceService = get(PIMInterfaceService.class);
+
+        Set<PIMInterface> interfaces = interfaceService.getPimInterfaces();
+
+        interfaces.forEach(
+                pimIntf -> print(FORMAT, pimIntf.getInterface().name(),
+                        pimIntf.getHoldtime(), pimIntf.getPriority(),
+                        pimIntf.getGenerationId()));
+    }
+
+}