Regression suite fails to install newman with latest nodejs

[harshbafna]

Context

• torchserve version: latest master
• torch version: 1.6.0
• torchvision version [if any]: 0.7.0
• torchtext version [if any]: 0.7.0
• torchaudio version [if any]: 0.6.0
• java version: OpenJDK 11
• Operating System and version:Ubuntu 18.04

Your Environment

• Installed using source? [yes/no]: yes
• Are you planning to deploy it using docker container? [yes/no]: No
• Is it a CPU or GPU environment?: Both
• Using a default/custom handler? [If possible upload/share custom handler/model]: NA
• What kind of model is it e.g. vision, text, audio?: NA
• Are you planning to use local models from model-store or public url being used e.g. from S3 bucket etc.?
  [If public url then provide link.]: NA
• Provide config.properties, logs [ts.log] and parameters used for model registration/update APIs: NA
• Link to your project [if any]: NA

Expected Behavior

Regression suite should successfully install newman and successfully execute the postman collections.

Current Behavior

newman fails to install with latest nodejs and postman collections doesn't execute.

Possible Solution

Freeze the node version to 14.13.1 as per the workaround provided here.
npm/cli#2000

Steps to Reproduce

Run torchserve rergression suite.

Failure Logs [if any]

npm installation failure log.

+ sudo npm install -g newman newman-reporter-html
npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
npm ERR! 
npm ERR! While resolving: undefined@undefined
npm ERR! Found: newman@5.2.0
npm ERR! node_modules/newman
npm ERR!   newman@"*" from the root project
npm ERR! 
npm ERR! Could not resolve dependency:
npm ERR! peer newman@"4" from newman-reporter-html@1.0.5
npm ERR! node_modules/newman-reporter-html
npm ERR!   newman-reporter-html@"*" from the root project
npm ERR! 
npm ERR! Fix the upstream dependency conflict, or retry
npm ERR! this command with --force, or --legacy-peer-deps
npm ERR! to accept an incorrect (and potentially broken) dependency resolution.
npm ERR! 
npm ERR! See /home/ubuntu/.npm/eresolve-report.txt for a full report.

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/ubuntu/.npm/_logs/2020-10-27T15_09_25_222Z-debug.log

[tigercosmos]

this also failed at mac_npm_deps

[harshbafna]

@tigercosmos: Please use the ts_scripts/install_dependencies.py instead of directly executing the mac_npm_deps script. It should take care of installing and setting the node version to 14.x.

Note: It will only unlink any existing version of the node and not uninstall it.