Update alcali default revision and allow git reset

[Ataye]

PR progress checklist (to be filled in by reviewers)

• [ ] Changes to documentation are appropriate (or tick if not required)
• [ ] Changes to tests are appropriate (or tick if not required)
• [ ] Reviews completed

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What type of PR is this?

Primary type

• [ ] [build] Changes related to the build system
• [ ] [chore] Changes to the build process or auxiliary tools and libraries such as documentation generation
• [ ] [ci] Changes to the continuous integration configuration
• [ ] [feat] A new feature
• [ ] [fix] A bug fix
• [ ] [perf] A code change that improves performance
• [ ] [refactor] A code change that neither fixes a bug nor adds a feature
• [ ] [revert] A change used to revert a previous commit
• [ ] [style] Changes that do not affect the meaning of the code (white-space, formatting, missing semi-colons, etc.)

Secondary type

• [ ] [docs] Documentation changes
• [ ] [test] Adding missing or correcting existing tests

Does this PR introduce a BREAKING CHANGE?

No.

Related issues and/or pull requests

Describe the changes you're proposing

If like me you add the formula as-is it installs and old version of alcali. After changing the revision in the pillar errors were reported that a git force_reset should be performed, but regular options could not achieve this.

These commits add the force_reset option to the pillar file, and also set the default alcali version to a newer revision.

Pillar / config required to test the proposed changes

old config:

alcali:
  deploy:
    repository: https://github.com/latenighttales/alcali.git
    rev: 2019.2
    user: alcali
    group: alcali
    directory: /opt/alcali
    runtime: python3

new config (after changing revision):

alcali:
  deploy:
    repository: https://github.com/latenighttales/alcali.git
    rev: v3003.1.0
    user: alcali
    group: alcali
    directory: /opt/alcali
    runtime: python3
    force_reset: True

Debug log showing how the proposed changes work

Documentation checklist

• [ ] Updated the README (e.g. Available states).
• [x] Updated pillar.example.

Testing checklist

• [ ] Included in Kitchen (i.e. under state_top).
• [ ] Covered by new/existing tests (e.g. InSpec, Serverspec, etc.).
• [ ] Updated the relevant test pillar.

Additional context

[sticky-note]

Thanks for the changes @Ataye :)