fix(android): change cookie option name and fix runtime error for setting cookie on Android

[ajaymaru]

PR Checklist

• [x] The PR title follows our guidelines: https://github.com/NativeScript/NativeScript/blob/master/CONTRIBUTING.md#commit-messages.
• [x] There is an issue for the bug/feature this PR is for. To avoid wasting your time, it's best to open a suggestion issue first and wait for approval before working on it.
• [ ] All existing tests are passing The automated build for the existing demo app is failing. Have not done any troubleshooting on it yet but the changes have been tested on my Android app. I can look into fixing the demo apps as well (requires migration to NS CLI v6)
• [ ] Tests for the changes are included Can look into amending the test/demo app once the migration to CLI v6 is completed.

What is the current behavior?

91, #92

What is the new behavior?

Fixes the error described in the issues listed above by correcting the option key value and a fix for the runtime error on Android

Fixes/Implements/Closes #[Issue Number].

91, #92

[ajaymaru]

@triniwiz I was wondering if you are planning to push the fixes out in a new release to npm. Thanks.