Modernize 'except' clauses

The 'as' syntax works from Python 2 on, and Python 3 will
drop the "comma" syntax.

Reviewed-By: Tomas Babej <tbabej@redhat.com>

contrib/RHEL4/ipa-client-setup

@@ -112,7 +112,7 @@ class ipaserver:
                 self.domain = lrealms[0].lower()
                 return True
 
-        except LDAPError, err:
+        except LDAPError as err:
             #no good
             root_logger.error("Ldap Error: "+str(err))
             return False
@@ -289,7 +289,7 @@ def main():
             {'name':'empty', 'type':'empty'}]
     try:
         ldapconf.newConf("/etc/ldap.conf", opts)
-    except Exception, e:
+    except Exception as e:
         print "Configuration failed: " + str(e)
         return 1
 

contrib/RHEL4/ipachangeconf.py

@@ -435,7 +435,7 @@ class IPAChangeConf:
         try:
             try:
                 shutil.copy2(file, file+".ipabkp")
-            except IOError, err:
+            except IOError as err:
                 if err.errno == 2:
                     # The orign file did not exist
                     pass