Upgrade FSC to allow list-child-specs option

closes OUT-4802
flag=none

Test-plan:
- test with a custom_reports PS referencing this
- see comments for expectations of FSC re-runs, compare against
  actual

Change-Id: I94ead7b61e37512231b558b16b57a8bfb2cff4c8
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/276101
Tested-by: Service Cloud Jenkins <svc.cloudjenkins@instructure.com>
Reviewed-by: James Butters <jbutters@instructure.com>
QA-Review: Brian Watson <bwatson@instructure.com>
Product-Review: Brian Watson <bwatson@instructure.com>

Gemfile.d/test.rb

@@ -63,7 +63,7 @@ group :test do
 
   gem 'parallel_tests'
   gem 'rspecq', github: 'kyler-instructure/rspecq', ref: 'a49343fa7eab3329cd5dd86d059b33fc6fee0ce3'
-  gem 'flakey_spec_catcher', require: false
+  gem 'flakey_spec_catcher', '~> 0.11.2', require: false
   gem 'factory_bot', '6.1.0', require: false
   gem 'rspec_junit_formatter', require: false
   # axe-core* versions at or above 4.2 have difficulties with iframes. Keep these at 4.1.0 until fixes are investigated

Jenkinsfile.selenium.flakey_spec_catcher

@@ -73,7 +73,7 @@ def computeTestCount() {
                  --env FSC_IGNORE_FILES \
                  -w=$DOCKER_WORKDIR \
                  $PATCHSET_TAG \
-          bash -c "flakey_spec_catcher --use-parent --dry-run-quiet > $DOCKER_WORKDIR/tmp/test_list"
+          bash -c "flakey_spec_catcher --use-parent --list-child-specs --dry-run-quiet > $DOCKER_WORKDIR/tmp/test_list"
     '''
 
     changedTests = readFile("$env.LOCAL_WORKDIR/tmp/test_list").trim()
@@ -91,24 +91,6 @@ def computeTestCount() {
     "$DOCKER_WORKDIR/$changedTest"
   }
 
-  sh """
-    docker-compose run --rm -v \$(pwd)/\$LOCAL_WORKDIR/tmp:\$DOCKER_WORKDIR/tmp \
-      canvas \
-      bash -c "bundle exec rspec --dry-run ${changedTestsArr.join(' ')} --require ./build/new-jenkins/rspec_location.rb --format RSpecLocationFormatter --out ${env.DOCKER_WORKDIR}/tmp/test_list_split"
-  """
-
-  sh "sed -i '/shared_examples/d' $env.LOCAL_WORKDIR/tmp/test_list_split"
-  changedTests = readFile("$env.LOCAL_WORKDIR/tmp/test_list_split").trim()
-  changedTestsArr = changedTests.split('\n')
-
-  echo "raw result from splitter: \n====\n$changedTests\n===="
-
-  if (changedTests.length() == 0) {
-    echo 'no tests found to execute'
-
-    return
-  }
-
   def testCount = changedTestsArr.size()
   def weightedValues = changedTestsArr.collect { changedTest ->
     changedTest.contains('selenium') ? env.SELENIUM_RATIO.toInteger() : 1

build/new-jenkins/rspec_location.rb

@@ -1,13 +0,0 @@
-# frozen_string_literal: true
-
-class RSpecLocationFormatter
-  RSpec::Core::Formatters.register self, :example_started
-
-  def initialize(output)
-    @output = output
-  end
-
-  def example_started(notification)
-    @output << notification.example.location << "\n"
-  end
-end