Replace the library request and request-promise with an alternative

[Link-]

In many places we're using these 2 libraries for HTTP(s) requests.

"request": "^2.88.2",
"request-promise": "^4.2.5",

These have been deprecated as per: request/request#3142

We need to switch to an alternative. Some options are: request/request#3143

@omaraboumrad has introduced node-fetch in some of the plugins, so if it suits our needs let's go with it.