added support for http endpoints and OAuth2 PAM configuration

cmd/pam_user_reader.py

+#!/usr/bin/env python
+#
+#   * use 4 spaces!!! not tabs
+#   * See PEP-8 Python style guide http://www.python.org/dev/peps/pep-0008/
+#   * use pylint
+#
+
+import json
+
+user_map_file="/etc/irods/user_map.json"
+
+def parseUserMap():
+    """Parse the user map file"""
+
+    with open(user_map_file, 'r') as f:
+        user_map = json.load(f)
+        jstr = json.dumps(user_map, ensure_ascii=True, indent=4)
+        print(jstr)
+
+
+if __name__ == "__main__":
+ 
+    parseUserMap()