Description of problem:

Trying to start plague-server after install throws a syntax error

Version-Release number of selected component (if applicable):

plague-0.4.5.6-1.el5

How reproducible:

Always

Steps to Reproduce:
1. install plague + deps
2. start plague-server
  
Actual results:

  File "/usr/share/plague/server/BuildMaster.py", line 30
    class PeriodicJob():  # this is reused also by external patches
                      ^
SyntaxError: invalid syntax


Expected results:

server starts

Additional info:

changing line to the following fixes the issue and allows the server to start:

class PeriodicJob:  # this is reused also by external patches