Convert some beaker tests to rspec integration

The switch to using the http client for all indirector requests introduced regressions that weren't caught in nightly CI or when running jenkins please test this with servertests. Fortunately this was caught downstream before we released in PUP-10359, but it would be good to faster feedback.

The issues weren't tested during PR testing, because with servertests only runs tests tagged with risk:high or audit:high, and several tests that would have caught the issue are tagged as *:medium, such as:

acceptance/tests/direct_puppet/static_catalog_env_control.rb

acceptance/tests/direct_puppet/cached_catalog_remediate_local_drift.rb

acceptance/tests/language/sensitive_data_type.rb

acceptance/tests/reports/failover_master.rb