Allow setting resource.RLIMIT_NOFILE in modules (#51989)

test/integration/targets/ansiballz_python/library/check_rlimit_and_maxfd.py

@@ -0,0 +1,31 @@
+#!/usr/bin/python
+#
+# Copyright 2018 Red Hat | Ansible
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
+
+from __future__ import absolute_import, division, print_function
+__metaclass__ = type
+
+import resource
+import subprocess
+
+from ansible.module_utils.basic import AnsibleModule
+
+
+def main():
+    module = AnsibleModule(
+        argument_spec=dict()
+    )
+
+    rlimit_nofile = resource.getrlimit(resource.RLIMIT_NOFILE)
+
+    try:
+        maxfd = subprocess.MAXFD
+    except AttributeError:
+        maxfd = -1
+
+    module.exit_json(rlimit_nofile=rlimit_nofile, maxfd=maxfd, infinity=resource.RLIM_INFINITY)
+
+
+if __name__ == '__main__':
+    main()