public void patch(String hostname, InputStream json) {
        unifiedPatch(hostname, json, false);
    }
Apply given JSON to the node identified by hostname. Any patched node(s) are written to the node repository.

Note: This may patch more than one node if the field being patched must be applied recursively to host and node.
node-repository/src/main/java/com/yahoo/vespa/hosted/provision/restapi/NodePatcher.java