ca-certificates-cacert-1-bp156.5.1

- remove CAcert.pem (md5 based, super outdated)
- added CAcert_class1.pem (new class1 cert)

- Update class3.crt to the new one expiring 2031 again

- spec-cleaner run (bsc#1186362)

- update Class 3 certificate from https://www.cacert.org/class3.crt
  (the old one expired today)

- Use urls for sources
- Simplify spec file

- replaced the "Class 3 PKI Key" by the current version. Changes its
  signature algorithm from RSA-MD5 to RSA-SHA256. (bnc#868884)

- use correct 'anchors' subdirectory

- adjust to new filesytem location

- include root distribution license (bnc#761554)

- new package