adding interpreter_discovery tests to ci

.ci/mitogen_install.py

@@ -15,4 +15,4 @@ if ci_lib.have_docker():
     ])
 
 
-ci_lib.run_batches(batches)
+ci_lib.run_batches(batches)

tests/ansible/integration/all.yml

@@ -11,6 +11,7 @@
 - include: connection_loader/all.yml
 - include: context_service/all.yml
 - include: glibc_caches/all.yml
+- include: interpreter_discovery/all.yml
 - include: local/all.yml
 - include: module_utils/all.yml
 - include: playbook_semantics/all.yml