Only a single cert in DER or PEM format would be loaded from the provided file. Extend this to include PKCS#7 format and load all certificates found in the file. Signed-off-by: Rob Crittenden <rcritten@redhat.com> https://pagure.io/freeipa/issue/7579 Reviewed-By: Florence Blanc-Renaud <frenaud@redhat.com>