CI: run all modules builds in parallel.

[thresheek]

The previous approach with building all modules builds on a same VM works fine, however the disk space on a single GHA runner is limited and not enough anymore on select targets.

[oxpa]

NGINX_VERSION=$(make --eval 'nv:; @echo $(BASE_VERSION)' nv)

This can probably be done by sourcing contrib/src/nginx/version

dnf -y install $(rpmspec -P ./${spec} | grep BuildRequires | cut -d: -f2- | xargs)

And this is dnf -y builddep ${spec} in most cases. Or yum-builddep ${spec}. Though thinking about this - I'm not sure if the latter needs -y flag

[thresheek]

Sourcing the file doesnt work:

$ basename $(pwd)
pkg-oss
$ . contrib/src/nginx/version
dash: 1: contrib/src/nginx/version: NGINX_VERSION: not found
dash: 2: contrib/src/nginx/version: NGINX_PLUS_VERSION: not found

[thresheek]

And this is dnf -y builddep ${spec} in most cases.

Woah, I had no idea! Implemented that instead of an ugly way I had before.