Update test run generator for brave-core

[srirambv]

Fixes #93

Milestones needs to organized on repo and that needs updating in future once we get to proper channel releases. This is only for temp changes to add issues with QA/Needed labels to test sheet.

[kjozwiak]

@srirambv there seems to be a bug here:

qa-resources/brave_testrun_generator.py

Line 158 in 4bb2dcf

if('release-notes/include' in label_names or 'release-notes/exclude' in label_names and 'tests' not in label_names):

.

It also includes or 'release-notes/exclude' in label_names which will basically add anything that's labelled as 'release-notes/exclude' into release_notes.append(output_line).

Example with or 'release-notes/exclude' in label_names:

Create test runs for: 1

Generating Per-release checklist for 0.56.x - Release Hotfix 1 on all platforms
0.56.x - Release Hotfix 1
Release Notes
 - Cookies not imported - follow up to 1545.([#2013](https://github.com/brave/brave-browser/issues/2013))
 - Stats not imported during auto-upgrade.([#2014](https://github.com/brave/brave-browser/issues/2014))
 - Upgrade from Chromium 70.0.3538.77 to 70.0.3538.102.([#2099](https://github.com/brave/brave-browser/issues/2099))

Example without or 'release-notes/exclude' in label_names:

Create test runs for: 1

Generating Per-release checklist for 0.56.x - Release Hotfix 1 on all platforms
0.56.x - Release Hotfix 1
Release Notes
 - Upgrade from Chromium 70.0.3538.77 to 70.0.3538.102.([#2099](https://github.com/brave/brave-browser/issues/2099))

[kjozwiak]

Generating an iOS run also generates the following:

Choose the platform for which you want to generate the test run: 3
Generating test runs for iOS  Sprint w/e 13th Jan 2019
['Sprint w/e 13th Jan 2019', 'Sprint w/e 16th Dec 2018', 'Sprint w/e 18th Nov 2018', 'Sprint w/e 2nd Dec 2018', 'Sprint w/e 30th Dec 2018', 'Sprint w/e 4th Nov 2018']
Release Note:

We can probably open a new issue to address the iOS issue as we need to get the scripts going for b-c since we'll be getting 0.56.x Hotfix 1 builds soon 👍

[srirambv]

Fixed review comments for template and iOS. I'll do a follow up PR for the release notes. Will take it all out since Changelog generator is created for that now.