SONAR suggestion - generic exceptions

Replace uses of generic RuntimeException
with more appropriate unchecked exceptions

Change-Id: If283743c2cf7252b8d280bdb788708ebbe57da9d
diff --git a/protocols/isis/ctl/src/main/java/org/onosproject/isis/controller/impl/Controller.java b/protocols/isis/ctl/src/main/java/org/onosproject/isis/controller/impl/Controller.java
index 6deadfd..e8dc9f0 100644
--- a/protocols/isis/ctl/src/main/java/org/onosproject/isis/controller/impl/Controller.java
+++ b/protocols/isis/ctl/src/main/java/org/onosproject/isis/controller/impl/Controller.java
@@ -206,7 +206,7 @@
      * @param json posted json
      * @return list of processes configured
      */
-    private List<IsisProcess> getConfig(JsonNode json) throws Exception {
+    private List<IsisProcess> getConfig(JsonNode json) {
         List<IsisProcess> isisProcessesList = new ArrayList<>();
         JsonNode jsonNodes = json;
         if (jsonNodes == null) {
diff --git a/protocols/isis/ctl/src/main/java/org/onosproject/isis/controller/impl/lsdb/IsisLspQueueConsumer.java b/protocols/isis/ctl/src/main/java/org/onosproject/isis/controller/impl/lsdb/IsisLspQueueConsumer.java
index a43f424..ddee647 100644
--- a/protocols/isis/ctl/src/main/java/org/onosproject/isis/controller/impl/lsdb/IsisLspQueueConsumer.java
+++ b/protocols/isis/ctl/src/main/java/org/onosproject/isis/controller/impl/lsdb/IsisLspQueueConsumer.java
@@ -82,7 +82,7 @@
      *
      * @param wrapper LSP wrapper instance
      */
-    private void processRefreshLsp(LspWrapper wrapper) throws Exception {
+    private void processRefreshLsp(LspWrapper wrapper) {
         if (wrapper.isSelfOriginated()) { //self originated
             DefaultIsisInterface isisInterface = (DefaultIsisInterface) wrapper.isisInterface();
             Channel channel = isisInterface.channel();
diff --git a/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/IsisMessageReader.java b/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/IsisMessageReader.java
index c1d5f81..09cac03 100644
--- a/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/IsisMessageReader.java
+++ b/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/IsisMessageReader.java
@@ -105,7 +105,7 @@
      * @return ISIS header
      * @throws Exception
      */
-    private IsisHeader getIsisHeader(ChannelBuffer channelBuffer) throws Exception {
+    private IsisHeader getIsisHeader(ChannelBuffer channelBuffer) {
 
         IsisHeader isisHeader = new IsisHeader();
         isisHeader.setIrpDiscriminator(channelBuffer.readByte());