Rename tests (#68356)

* Rename `tests` test to match plugin type.

* Rename `test_infra` test to avoid confusion.

This test target is not a test for test plugins.

* Rename `vars_prompt` test to avoid confusion.

* Update sanity ignores.

test/sanity/ignore.txt

@@ -331,15 +331,15 @@ test/integration/targets/template/files/foo.dos.txt line-endings
 test/integration/targets/template/role_filter/filter_plugins/myplugin.py future-import-boilerplate
 test/integration/targets/template/role_filter/filter_plugins/myplugin.py metaclass-boilerplate
 test/integration/targets/template/templates/encoding_1252.j2 no-smart-quotes
-test/integration/targets/test_infra/library/test.py future-import-boilerplate
-test/integration/targets/test_infra/library/test.py metaclass-boilerplate
+test/integration/targets/infra/library/test.py future-import-boilerplate
+test/integration/targets/infra/library/test.py metaclass-boilerplate
 test/integration/targets/unicode/unicode.yml no-smart-quotes
 test/integration/targets/uri/files/testserver.py future-import-boilerplate
 test/integration/targets/uri/files/testserver.py metaclass-boilerplate
 test/integration/targets/var_precedence/ansible-var-precedence-check.py future-import-boilerplate
 test/integration/targets/var_precedence/ansible-var-precedence-check.py metaclass-boilerplate
-test/integration/targets/vars_prompt/test-vars_prompt.py future-import-boilerplate
-test/integration/targets/vars_prompt/test-vars_prompt.py metaclass-boilerplate
+test/integration/targets/builtin_vars_prompt/test-vars_prompt.py future-import-boilerplate
+test/integration/targets/builtin_vars_prompt/test-vars_prompt.py metaclass-boilerplate
 test/integration/targets/vault/test-vault-client.py future-import-boilerplate
 test/integration/targets/vault/test-vault-client.py metaclass-boilerplate
 test/integration/targets/wait_for/files/testserver.py future-import-boilerplate