Added support for more git URL formats

[thedumbterminal]

Summary

After recent work on fixing the private shortened git URL formats I've noticed there are still some that do not work.

For example this URL format works:

github:thedumbterminal/test-private-node-module

But this format does not:

github:thedumbterminal/test-private-node-module.git

This work fixes this.

Test plan

Create a new directory with the following package.json:

{
  "name": "1",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
   "grunt-gemnasium": "github:thedumbterminal/grunt-gemnasium.git"
  }
}

Without this fix you will get the following error:

ssh: Could not resolve hostname github: nodename nor servname provided, or not known
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

(Notice the error: Could not resolve hostname github which is incorrect)

With this fix you will able to install these modules as it will switch to ssh auth.

[bestander]

Thanks for adding tests!