feat(doc): ipv6 on business cluster

docs/yamls/cluster-ipv6-ds.json

+{
+    "apiVersion": "platform.tkestack.io/v1",
+    "kind": "Cluster",
+    "spec": {
+	"displayName": "ipv6-ds",
+	"clusterCIDR": "200.200.0.0/16,fd00:10:16::/64",
+	"serviceCIDR": "10.200.0.0/16,fd00:10:96::/112",
+        "tenantID": "default",
+        "type": "Baremetal",
+        "version": "1.18.3",
+        "features": {
+	  "ipvs": false,
+	  "ipv6DualStack": true,
+	  "skipConditions": ["EnsureGalaxy"]
+	},
+        "machines": [
+            {
+                "ip": "172.22.0.67",
+                "port": 22,
+                "username": "root",
+                "password": "xxxxxx"
+            }
+        ]
+    }
+}

docs/yamls/cluster-ipv6-sig.json

+{
+    "apiVersion": "platform.tkestack.io/v1",
+    "kind": "Cluster",
+    "spec": {
+	"hostnameAsNodename": true,
+	"displayName": "ipv6-sig",
+	"clusterCIDR": "fd00:10:16::/64",
+	"serviceCIDR": "fd00:10:96::/112",
+        "tenantID": "default",
+        "type": "Baremetal",
+        "version": "1.18.3",
+        "features": {
+	  "ipvs": false,
+	  "enableMetricsServer": false,
+	  "ipv6DualStack": false,
+	  "skipConditions": ["EnsureGalaxy"]
+	},
+        "kubeletExtraArgs": {
+           "node-ip": "240d:c000:1000:3400:0:91a2:3ff3:4b3e"
+	},
+        "machines": [
+            {
+                "ip": "240d:c000:1000:3400:0:91a2:3ff3:4b3e",
+                "port": 22,
+                "username": "root",
+                "password": "xxxxx"
+            }
+        ]
+    }
+}

docs/yamls/machine-ds.json

+{
+  "kind": "Machine",
+  "apiVersion": "platform.tkestack.io/v1",
+  "metadata": {
+    "name": "mc-9r2dkcqj",
+    "generateName": "mc-"
+  },
+  "spec": {
+    "finalizers": [
+      "machine"
+    ],
+    "tenantID": "default",
+    "clusterName": "cls-7q46p7mt",
+    "type": "Baremetal",
+    "ip": "172.22.0.102",
+    "port": 22,
+    "username": "root",
+    "password": "xxxxxx"
+  }
+}

docs/yamls/machine-sig.json

+{
+  "kind": "Machine",
+  "apiVersion": "platform.tkestack.io/v1",
+  "metadata": {
+    "name": "mc-9r2dkcqj",
+    "generateName": "mc-"
+  },
+  "spec": {
+    "finalizers": [
+      "machine"
+    ],
+    "tenantID": "default",
+    "clusterName": "cls-2xcfb5wp",
+    "type": "Baremetal",
+    "ip": "240d:c000:1000:3400:0:91a2:3ff4:3a46",
+    "port": 22,
+    "username": "root",
+    "password": "xxxxxx"
+  }
+}