CB-11993 - windows platform doesn't test all node versions on appveyor and travis

[shazron]

Platforms affected

Self.

What does this PR do?

Makes appveyor and travis CI test for all node versions.

What testing has been done on this change?

We'll find out if this PR passes on appveyor or travis, since we are modifying the CI config files themselves.

Checklist

• Reported an issue in the JIRA database
• Commit message follows the format: "CB-3232: (android) Fix bug with resolving file paths", where CB-xxxx is the JIRA ID & "android" is the platform affected.
• Added automated test coverage as appropriate for this change.

[shazron]

Failing on Travis 0.12, 4, and 6 (but works on 0.10).
Env vars expected are null because Travis is on Linux and not on Windows. e.g

cordova-windows/template/cordova/lib/deployment.js

Line 128 in 1417b93

var programFilesPath = process.env['ProgramFiles(x86)'] || process.env['ProgramFiles'];

We need to mock the env var in the test, like the deployment tests that follow the failing tests

[codecov-io]

Current coverage is 74.34% (diff: 100%)

Merging #201 into master will not change coverage

@@             master       #201   diff @@
==========================================
  Files            14         14          
  Lines          1949       1949          
  Methods         366        366          
  Messages          0          0          
  Branches        392        392          
==========================================
  Hits           1449       1449          
  Misses          500        500          
  Partials          0          0          

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