nano cpus: add support nano cpus

Signed-off-by: Nlifeng68 <lifeng68@huawei.com>

src/json/schema/host-config.json

@@ -133,6 +133,9 @@
         "BlkioDeviceWriteIops": {
             "$ref": "defs.json#/definitions/ArrayOfBlkioDevice"
         },
+        "NanoCpus": {
+            "type": "int64"
+        },
         "CPUPeriod": {
             "type": "int64"
         },
@@ -256,4 +259,4 @@
             "type": "string"
         }
     }
-}
+}
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