code: function (deployPath) {
    const envFilePath = setupHelper.setupFolderAbsolutePath() + '/' + setupConfig.env_vars_file
      , clearCacheOfExpr = /(openst-platform\/config\/)|(openst-platform\/lib\/)|(openst-platform\/services\/)/;
  
    return new Promise(function (onResolve, onReject) {
      // source env
      shellSource(envFilePath, async function (err) {
        if (err) {
          throw err;
        }
        Object.keys(require.cache).forEach(function (key) {
          if (key.search(clearCacheOfExpr) !== -1) {
            delete require.cache[key];
          }
        });
  
        const setupHelper = require(deployPath);
        return onResolve(await setupHelper.perform());
      });
    });
  
  }
docs: Run the deployer helper service
  
  @param {string} deployPath - contract deployment script path
  
  @return {promise}