Add back Py3 tests that now work

build-support/known_py3_failures.txt

@@ -1,55 +1,9 @@
-tests/python/pants_test/backend/codegen/antlr/java:java
-tests/python/pants_test/backend/codegen/antlr/python:python
-tests/python/pants_test/backend/codegen/jaxb:jaxb
 tests/python/pants_test/backend/codegen/thrift/java:java
 tests/python/pants_test/backend/codegen/thrift/python:python
-tests/python/pants_test/backend/docgen/targets:wiki_page
-tests/python/pants_test/backend/graph_info/tasks:cloc
-tests/python/pants_test/backend/graph_info/tasks:dependees
-tests/python/pants_test/backend/graph_info/tasks:filemap
-tests/python/pants_test/backend/graph_info/tasks:filter
-tests/python/pants_test/backend/graph_info/tasks:listtargets
-tests/python/pants_test/backend/graph_info/tasks:minimal_cover
-tests/python/pants_test/backend/graph_info/tasks:paths
-tests/python/pants_test/backend/graph_info/tasks:sorttargets
-tests/python/pants_test/backend/jvm/subsystems:custom_scala
-tests/python/pants_test/backend/jvm/targets:jvm_app
-tests/python/pants_test/backend/jvm/targets:jvm_binary
-tests/python/pants_test/backend/jvm/tasks/reports:reports
-tests/python/pants_test/backend/jvm/tasks:benchmark_run
-tests/python/pants_test/backend/jvm/tasks:binary_create
-tests/python/pants_test/backend/jvm/tasks:bootstrap_jvm_tools
-tests/python/pants_test/backend/jvm/tasks:bundle_create
-tests/python/pants_test/backend/jvm/tasks:check_published_deps
-tests/python/pants_test/backend/jvm/tasks:checkstyle
-tests/python/pants_test/backend/jvm/tasks:classmap
-tests/python/pants_test/backend/jvm/tasks:consolidate_classpath
 tests/python/pants_test/backend/jvm/tasks:coursier_resolve
-tests/python/pants_test/backend/jvm/tasks:detect_duplicates
-tests/python/pants_test/backend/jvm/tasks:ivy_imports
-tests/python/pants_test/backend/jvm/tasks:ivy_resolve
-tests/python/pants_test/backend/jvm/tasks:ivy_utils
-tests/python/pants_test/backend/jvm/tasks:jar_create
-tests/python/pants_test/backend/jvm/tasks:jar_publish
-tests/python/pants_test/backend/jvm/tasks:jar_task
 tests/python/pants_test/backend/jvm/tasks:junit_run
-tests/python/pants_test/backend/jvm/tasks:jvm_platform_analysis
-tests/python/pants_test/backend/jvm/tasks:jvm_run
-tests/python/pants_test/backend/jvm/tasks:jvm_task
-tests/python/pants_test/backend/jvm/tasks:jvmdoc_gen
 tests/python/pants_test/backend/jvm/tasks:resources_task
-tests/python/pants_test/backend/jvm/tasks:scalafmt
-tests/python/pants_test/backend/jvm/tasks:scalastyle
-tests/python/pants_test/backend/jvm/tasks:unpack_jars
-tests/python/pants_test/backend/native/subsystems:subsystems
-tests/python/pants_test/backend/native/tasks:tasks
-tests/python/pants_test/backend/project_info/tasks:dependencies
-tests/python/pants_test/backend/project_info/tasks:depmap
-tests/python/pants_test/backend/project_info/tasks:export
-tests/python/pants_test/backend/project_info/tasks:filedeps
-tests/python/pants_test/backend/python/tasks:isort_run
 tests/python/pants_test/backend/python/tasks:tasks
-tests/python/pants_test/backend/python:interpreter_cache
 tests/python/pants_test/binaries:binaries
 tests/python/pants_test/build_graph:build_file_parser
 tests/python/pants_test/build_graph:build_graph