Tuan Hoang authored Aug 17, 2020 and Rasmus Thomsen committed Aug 18, 2020

zipl: drop unnecessary -Os patch (not actually used since v2.12.0)
zipl: add a patch for v2.13.0 for handling diag308 response code
osasnmpd: enable building by having make deps net-snmp-dev
misc: update zkey patch, allow parallel building