feat(mojaloop/#2092): upgraded node version and refactored postman functional tests

[vijayg10]

feat(mojaloop/#2092): upgrade nodeJS version for core services - mojaloop/project#2092

• Upgrade to node v16
• Update packages/linting/audit/dockerfile
• Update ci with dep/audit checks
• Installed pre-commit hooks
• refactored postman functional tests

Notes:

• Helm chart mountPaths need to be updated from /opt/mojaloop-testing-toolkit to /opt/app as follows:

      volumeMounts:
      - mountPath: /opt/app/config
        name: <deployment-name>

BREAKING CHANGE: Major version bump for node v16 LTS support, re-structuring of project directories to align to core Mojaloop repositories and docker image now uses /opt/app instead of /opt/mojaloop-testing-toolkit which will impact config mounts, and changed the port number from 5000 to 4040 which will impact the values in TTK environment files used in test executions and helm values files used in K8S deployments.

Major version bump since this is a big upgrade.

[mdebarros]

Updated your PR description.

See my comments...

Additional comments for your attention

• Please include missing breaking changes in PR BREAKING CHANGES: section, such as /opt/app folder change, port-mapping changes, etc.

[mdebarros]

Thanks for the updates, I found some minor follow-up changes.

P.s. please don't forget to update the BREAKING CHANGES in the PR/Commit description.

[mdebarros]

Its looking good...some very minor suggested changes