Remove CRL support and dependency on pulp provided M2Crypto.
Removed [crl] section.
Merge branch 'pulp-2.4' into jortel-CRL-removed

Conflicts:
	pulp-rpm.spec
Removed references to CRL in UG.
Unused test data.
Merge pull request #520 from pulp/jortel-CRL-removed

Remove CRL support and dependency on pulp provided M2Crypto.