move pylib.yml to own role

roles/pylibs/templates/iiab_env.py.j2

@@ -0,0 +1,27 @@
+#!/usr/bin/python3
+# read iiab.env from python
+
+def get_iiab_env(name):
+   """ read iiab.env file for a value, return "" if does not exist"""
+   try:
+      fd = open("{{ iiab_env_file }}","r")
+      for line in fd:
+         line = line.lstrip()
+         line = line.rstrip('\n')
+         if len(line) == 0:
+            continue
+         if line[0] == "#":
+            continue
+         if line.find("=") == -1:
+            continue
+         chunks = line.split('=')
+         if chunks[0] == name:
+            return chunks[1]
+      return("")
+   except:
+      return("")
+   finally:
+      fd.close()
+
+if __name__ == "__main__":
+   print(get_iiab_env("WWWROOT"))