Update and Remove some network-cfg.json sample

Remove network-cfg
    Each app has its own way to interpret the config.
    Therefore it doesn't make sense to keep a generic one
    In long term, each app should have a json schema that explain the meaning
Remove network-cfg-fabric4x4
    It does not provide more info than 2x2
Remove network-cfg-fabric2x2-default-route and network-cfg-fabric2x2-xconnect
    Keeping features in different configs doesn't help much but make people confused
    Also it's hard to maintain so many samples
Add network-cfg-fabric-2x2-all
    Full fabric config with readme
    The html documentation is just temporary. We will have a json schema
Rename/update network-cfg-fabric-2x2-min.json
    Minimum config required by the fabric

Change-Id: I93332d8166c264b9dbb7819b90099c2f19fcf3b5
diff --git a/tools/package/config/samples/network-cfg-fabric-2x2-min.json b/tools/package/config/samples/network-cfg-fabric-2x2-min.json
new file mode 100644
index 0000000..9a363cc
--- /dev/null
+++ b/tools/package/config/samples/network-cfg-fabric-2x2-min.json
@@ -0,0 +1,100 @@
+{
+    "ports" : {
+    "of:0000000000000001/3" : {
+        "interfaces" : [
+        {
+            "ips" : [ "10.0.1.254/24" ]
+        }
+        ]
+    },
+    "of:0000000000000001/4" : {
+        "interfaces" : [
+        {
+            "ips" : [ "10.0.1.254/24" ]
+        }
+        ]
+    },
+    "of:0000000000000002/3" : {
+        "interfaces" : [
+        {
+            "ips" : [ "10.0.2.254/24" ]
+        }
+        ]
+    },
+    "of:0000000000000002/4" : {
+        "interfaces" : [
+        {
+            "ips" : [ "10.0.2.254/24" ]
+        }
+        ]
+    }
+    },
+    "devices" : {
+        "of:0000000000000001" : {
+            "segmentrouting" : {
+                "name" : "Leaf-R1",
+                "nodeSid" : 101,
+                "routerIp" : "10.0.1.254",
+                "routerMac" : "00:00:00:00:01:80",
+                "isEdgeRouter" : true,
+                "adjacencySids" : []
+            }
+        },
+        "of:0000000000000002" : {
+            "segmentrouting" : {
+                "name" : "Leaf-R2",
+                "nodeSid" : 102,
+                "routerIp" : "10.0.2.254",
+                "routerMac" : "00:00:00:00:02:80",
+                "isEdgeRouter" : true,
+                "adjacencySids" : []
+            }
+        },
+        "of:0000000000000191" : {
+            "segmentrouting" : {
+                "name" : "Spine-R1",
+                "nodeSid" : 103,
+                "routerIp" : "192.168.0.11",
+                "routerMac" : "00:00:01:00:11:80",
+                "isEdgeRouter" : false,
+                "adjacencySids" : []
+            }
+        },
+        "of:0000000000000192" : {
+            "segmentrouting" : {
+                "name" : "Spine-R2",
+                "nodeSid" : 104,
+                "routerIp" : "192.168.0.22",
+                "routerMac" : "00:00:01:00:22:80",
+                "isEdgeRouter" : false,
+                "adjacencySids" : []
+            }
+        }
+    },
+    "hosts" : {
+        "00:00:00:00:00:01/-1" : {
+            "basic": {
+                "ips": ["10.0.1.1"],
+                "location": "of:0000000000000001/3"
+            }
+        },
+        "00:00:00:00:00:02/-1" : {
+            "basic": {
+                "ips": ["10.0.1.2"],
+                "location": "of:0000000000000001/4"
+            }
+        },
+        "00:00:00:00:00:03/-1" : {
+            "basic": {
+                "ips": ["10.0.2.1"],
+                "location": "of:0000000000000002/3"
+            }
+        },
+        "00:00:00:00:00:04/-1" : {
+            "basic": {
+                "ips": ["10.0.2.2"],
+                "location": "of:0000000000000002/4"
+            }
+        }
+    }
+}