pylint: remove bare except

Bare except should not be used.

Reviewed-By: Petr Spacek <pspacek@redhat.com>
Reviewed-By: Lukas Slebodnik <lslebodn@redhat.com>

ipaclient/ipadiscovery.py

@@ -129,7 +129,7 @@ class IPADiscovery(object):
                 elif line.lower().startswith('search'):
                     domains += [(d, 'search domain from /etc/resolv.conf') for
                         d in line.split()[1:]]
-        except:
+        except Exception:
             pass
         if domain:
             domains = [domain] + domains