[scan] add option to specify result bundle path

[Cyberbeni]

Checklist

• I've run bundle exec rspec from the root directory to see all new and existing tests pass
• I've followed the fastlane code style and run bundle exec rubocop -a to ensure the code style is valid
• I see several green ci/circleci builds in the "All checks have passed" section of my PR (connect CircleCI to GitHub if not)
• I've read the Contribution Guidelines
• I've updated the documentation if necessary.

Motivation and Context

lyndsey-ferguson/fastlane-plugin-test_center#384

Description

We use the test center plugin to split up UI tests into batches, so in the case of an xcodebuild crash, only a couple tests are retried instead of the whole run. This requires manually specifying the result bundle path as parallel testing is done by running scan multiple times in parallel.

Testing Steps

Tested with this branch of test center: https://github.com/Cyberbeni/fastlane-plugin-test_center/tree/scan-result-bundle-path

  lane :run_built_tests_with_retry do |options|
    multi_scan(
      workspace: options[:workspace],
      scheme: options[:scheme],
      output_directory: options[:output_directory],
      result_bundle: true,
      destination: options[:destination],
      try_count: 3,
      quit_simulators: false,
      parallel_testrun_count: 6,
      batch_count: 18,
      fail_build: false,
      retry_test_runner_failures: true,
      xcargs: '-maximum-test-execution-time-allowance 600 -test-timeouts-enabled YES',
      output_types: 'junit',
      output_files: 'result.xml',
      buildlog_path: "#{options[:output_directory]}",
      skip_testing: []
    )
  end

[Cyberbeni]

The CLA check is buggy, someone forked my fork and also opened a PR without any changes which broke the CLA check for this PR too.

[joshdholtz]

This looks good to me! Thanks for adding 😊

[fastlane-bot]

Hey @Cyberbeni 👋

Thank you for your contribution to fastlane and congrats on getting this pull request merged 🎉
The code change now lives in the master branch, however it wasn't released to RubyGems yet.
We usually ship about once a week, and your PR will be included in the next one.

Please let us know if this change requires an immediate release by adding a comment here 👍
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