File o_security_token.js

test/o_security_token.js:None–None

import latestTime from "./helpers/latestTime";
import { duration, ensureException, promisifyLogWatch, latestBlock } from "./helpers/utils";
import { getFreezeIssuanceAck, getDisableControllerAck } from "./helpers/signData";
import { takeSnapshot, increaseTime, revertToSnapshot } from "./helpers/time";