[CORD-2432][CORD-2431] Initial t3 implementation

Change-Id: I1ed421f82c234bb006ed2cefefea53d773f1efc9
diff --git a/src/main/java/org/onosproject/t3/impl/TroubleshootUtils.java b/src/main/java/org/onosproject/t3/impl/TroubleshootUtils.java
new file mode 100644
index 0000000..f89a413
--- /dev/null
+++ b/src/main/java/org/onosproject/t3/impl/TroubleshootUtils.java
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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.t3.impl;
+
+import com.google.common.collect.ImmutableMap;
+
+import java.util.Map;
+
+/**
+ * Utility class for the troubleshooting tool.
+ */
+final class TroubleshootUtils {
+
+    private TroubleshootUtils() {
+        //Banning construction
+    }
+
+    /**
+     * Map defining if a specific driver is for a HW switch.
+     */
+    //Done with builder() instead of of() for clarity
+    static Map<String, Boolean> hardwareOfdpaMap = ImmutableMap.<String, Boolean>builder()
+            .put("ofdpa", true)
+            .put("ofdpa3", true)
+            .put("qmx-ofdpa3", true)
+            .put("as7712-32x-premium", true)
+            .put("as5912-54x-premium", true)
+            .put("as5916-54x-premium", true)
+            .put("accton-ofdpa3", true)
+            .put("znyx-ofdpa", true)
+            .build();
+}