main/s390-tools: upgrade to 2.13.0

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
7 jobs for !11544 with s390-tools-2130 in 1 minute and 29 seconds (queued for 1 second)
latest detached
Status Job ID Name Coverage
  Lint
passed #189788
docker-alpine x86_64
lint

00:00:22

 
  Build
passed #189793
docker-alpine ci-build aarch64
build-aarch64

00:00:25

passed #189794
docker-alpine ci-build armv7
build-armv7

00:00:29

passed #189792
docker-alpine ci-build ppc64le
build-ppc64le

00:00:45

passed #189791
docker-alpine ci-build s390x
build-s390x

00:00:20

passed #189790
docker-alpine ci-build x86
build-x86

00:00:19

passed #189789
docker-alpine ci-build x86_64
build-x86_64

00:00:22