Fix CI issues

.gitlab-ci.yml

 job-flake8-2:
   image: gitlab-registry.mpcdf.mpg.de/mpcdf/osc-plugins/python2:flake8
   script:
-    - flake8 --filename=*.py --count --ignore=E501 .
+    - flake8 --filename=*.py --count --ignore=E501,W503 .
 
 job-flake8-3:
   image: gitlab-registry.mpcdf.mpg.de/mpcdf/osc-plugins/python3:flake8
   script:
-    - flake8 --filename=*.py --count --ignore=E501 .
+    - flake8 --filename=*.py --count --ignore=E501,W503 .

mpcdf_info.py

@@ -74,9 +74,9 @@ def do_mpcdf_info(self, subcmd, opts, *args):
             return ""
 
         print(" " + pkg_name_fmt.format(package), "--set=" + (",".join(enabled_repos)),
-              subset("--compiler-modules", "MPCDF:compiler_modules") +
-              subset("--mpi-modules", "MPCDF:mpi_modules") +
-              subset("--cuda-modules", "MPCDF:cuda_modules"))
+              subset("--compiler-modules", "MPCDF:compiler_modules")
+              + subset("--mpi-modules", "MPCDF:mpi_modules")
+              + subset("--cuda-modules", "MPCDF:cuda_modules"))
     print()
 
     if unmanaged:

mpcdf_push.py

@@ -39,6 +39,8 @@ def do_mpcdf_push(self, subcmd, opts, *args):
 
     ${cmd_option_list}
     """
+    import sys
+
     if len(args) < 1:
         raise osc.oscerr.WrongArgs("Not enough arguments")
     elif len(args) == 1: