refactor: update parse-duration import for consistency

Author: hebertcisco

script/command-parser.ts

@@ -5,7 +5,8 @@ import * as yargs from "yargs";
 import * as cli from "../script/types/cli";
 import * as chalk from "chalk";
 import backslash = require("backslash");
-import parseDuration = require("parse-duration");
+import parseDurationModule = require("parse-duration");
+const parseDuration: (str: string) => number = parseDurationModule.default;
 
 const packageJson = require("../../package.json");
 const ROLLOUT_PERCENTAGE_REGEX: RegExp = /^(100|[1-9][0-9]|[1-9])%?$/;