Various Bmv2 protocol refactorings in preparation of the flow rule
translator (ONOS-4044)

- Added new classes for different match parameters (exact, ternary, lpm,
  valid)
- Divided api package in two sub-packages, model (previously under
  drivers) and runtime (old api package)
- Improved Bmv2ThriftClient caching and table entry handling

Change-Id: I23c174cf3e8f9f6ecddb99c2d09dc531e8f1c73f
diff --git a/protocols/bmv2/src/main/java/org/onosproject/bmv2/api/runtime/Bmv2RuntimeException.java b/protocols/bmv2/src/main/java/org/onosproject/bmv2/api/runtime/Bmv2RuntimeException.java
new file mode 100644
index 0000000..f7153c5
--- /dev/null
+++ b/protocols/bmv2/src/main/java/org/onosproject/bmv2/api/runtime/Bmv2RuntimeException.java
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2016-present 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.bmv2.api.runtime;
+
+/**
+ * General exception of the Bmv2 runtime APIs.
+ */
+public class Bmv2RuntimeException extends Exception {
+
+    public Bmv2RuntimeException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public Bmv2RuntimeException(String message) {
+        super(message);
+    }
+}