ERP5Security/ERP5GroupManager: don't ignore errors

This plugin already does its own error handling, so we don't really
need to let PAS catch other errors. This way, if an error occurs during
getPortalSecurityCategoryMapping ( which calls ERP5Type_getSecurityCategoryMapping )
we don't have a successful authentication with no groups.
6 jobs for fix/security_ignore_errors in 0 seconds (queued for 4 seconds)
Status Job ID Name Coverage
  External
passed ERP5.CodingStyleTest-TestRunner2

03:11:09

failed ERP5.UnitTest-TestRunner2

04:48:44

passed ERP5.UnitTest-Zope2-ForTestRunner2

03:58:47

passed ERP5.CodingStyleTest-TestRunner2

01:11:52

failed ERP5.UnitTest-TestRunner2

02:41:38

failed ERP5.UnitTest-Zope2-ForTestRunner2

02:30:11