REST API for pseudowire addition / deletion.

Refactored pseudowire code to use REST in order
to add or delete pseudowires individually. Previous implementation
used the network configuration, which is now completely
removed from the code. Further, I re-organized the code
and create a utility class that holds all the necessary
functionality for verifying pseudowires.

Further, I removed all mastership checks in the pw code
since now a specific pseudowire creation is sent to a single
instance, which will handle the call.

Change-Id: I1eb5e7cc7730ad792ea84dd389475768153e2b68
diff --git a/web/src/main/resources/definitions/PseudowireCreate.json b/web/src/main/resources/definitions/PseudowireCreate.json
new file mode 100644
index 0000000..feddd18
--- /dev/null
+++ b/web/src/main/resources/definitions/PseudowireCreate.json
@@ -0,0 +1,68 @@
+{
+  "type": "object",
+  "title": "pseudowire-creation",
+  "required": [
+    "pwId",
+    "cP1",
+    "cP2",
+    "cP1InnerTag",
+    "cP1OuterTag",
+    "cP2InnerTag",
+    "cP2OuterTag",
+    "mode",
+    "sdTag",
+    "pwLabel"
+  ],
+  "properties": {
+    "pwId": {
+      "type": "string",
+      "example": "42",
+      "description": "Id of pseudowire to create."
+    },
+    "cP1": {
+      "type": "string",
+      "example": "of:0000000000000227/25",
+      "description": "Pseudowire connection point 1."
+    },
+    "cP2": {
+      "type": "string",
+      "example": "of:0000000000000226/25",
+      "description": "Pseudowire connection point 2."
+    },
+    "cP1InnerTag": {
+      "type": "string",
+      "example": "101",
+      "description": "Inner vlan for pseudowire connection point 1."
+    },
+    "cP1OuterTag": {
+      "type": "string",
+      "example": "",
+      "description": "Outer vlan for pseudowire connection point 1."
+    },
+    "cP2InnerTag": {
+      "type": "string",
+      "example": "101",
+      "description": "Inner vlan for pseudowire connection point 2."
+    },
+    "cP2OuterTag": {
+      "type": "string",
+      "example": "",
+      "description": "Outer vlan for pseudowire connection point 2."
+    },
+    "mode": {
+      "type": "string",
+      "example": "RAW",
+      "description": "Working mode of pseudowire."
+    },
+    "sDTag": {
+      "type": "string",
+      "example": "",
+      "description": "Service delimiting tag of the pseudowire"
+    },
+    "pwLabel": {
+      "type": "256",
+      "example": "",
+      "description": "Pseudowire label."
+    }
+  }
+}
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