Fixing Jenkins error (#48)

- ompackagemanager generate-cache can be used without OMPython

Author: AnHeuermann

ompackagemanager/updateinfo.py

@@ -1,4 +1,3 @@
-import OMPython
 import os
 from github import Github
 from atlassian import Bitbucket
@@ -8,8 +7,16 @@
 import re
 import shutil
 import requests
+import warnings
 import zipfile
 
+try:
+    import OMPython
+except ImportError:
+    OMPython = None
+    warnings.warn("Failed to load module OMPython.")
+
+
 from ompackagemanager import common
 
 bitbucket = Bitbucket(url="https://api.bitbucket.org")
@@ -64,6 +71,9 @@ def main():
     gh_auth = os.environ["GITHUB_AUTH"]
     g = Github(gh_auth)
 
+    if OMPython is None:
+        raise Exception("Module OMPython missing, aborting!")
+
     omc = OMPython.OMCSessionZMQ()
 
     data = json.load(open("repos.json"))