Attempting to quash SQLite3::BusyException

On occasion, our specs encounter a `SQLite3::BusyException` exception.
This commit, based on some Google-fu (actually DuckDuckGo-ing but
that's not yet in our vernacular), I found a few references that
involve increasing the `RAILS_MAX_THREADS` environment variable and/or
increasing the database timeout.

In CircleCI, for SHA 600753e and rspec
seed 3048, we encountered the problem. I don't assume that we can
duplicate this behavior with that configuration.

References

* https://stackoverflow.com/questions/7154664/ruby-sqlite3busyexception-database-is-locked

.circleci/config.yml

@@ -20,6 +20,7 @@ jobs:
     environment:
       RAILS_VERSION: << parameters.rails_version >>
       NOKOGIRI_USE_SYSTEM_LIBRARIES: true
+      RAILS_MAX_THREADS: 50
     steps:
       - samvera/cached_checkout
       - samvera/bundle_for_gem:

.regen

@@ -1 +1 @@
-5
+6

tasks/hyrax_dev.rake

@@ -46,6 +46,15 @@ if Gem.loaded_specs.key? 'engine_cart'
       puts 'Creating default collection type...'
       EngineCart.within_test_app do
         raise "EngineCart failed on with: #{$?}" unless system "bundle exec rake hyrax:default_collection_types:create"
+
+        # Replace the default sqlite timeout to 15000 (which should triple the timeout). Based on some
+        # googling, this may help address the "ActiveRecord::StatementInvalid:SQLite3::BusyException:"
+        # exception that is occassionally breaking the build.
+        database_yml_content = File.read("config/database.yml")
+        new_database_yml_content = database_yml_content.gsub(/timeout: +(\d+)/, 'timeout: 15000')
+        File.open("config/database.yml", "w+") do |f|
+          f.puts new_database_yml_content
+        end
       end
     end
   end