security/suricata: Update to 2.0.8

• Update to 2.0.8

This release fixes a bug in the DER parser which is used to
decode SSL/TLS certificates and could crash Suricata [1]

Security: CVE-2015-0971
Security: fe910ed6-f88d-11e4-9ae3-0050562a4d7b

MFH: 2015Q2
Security: CVE-2015-0971
Security: fe910ed6-f88d-11e4-9ae3-0050562a4d7b