BUG REPORT: Example job POST for minimal ISO isn't optimal

[tcooper]

Describe the bug

The example job POST provided in install-openqa-post-rocky.sh...

sudo openqa-cli api -X POST isos \
  ISO=Rocky-8.4-x86_64-minimal.iso \
  ARCH=x86_64 \
  DISTRI=rocky \
  FLAVOR=minimal-iso \
  VERSION=8 \
  GRUB="ip=dhcp bootdev=52:54:00:12:34:56 inst.waitfornet=300"

...is not optimal and sometimes doesn't setup the network correctly.

Proposed Solution

Provide an example POST that works in all cases. For example...

sudo openqa-cli api -X POST isos \
  ISO=Rocky-8.4-x86_64-minimal.iso \
  ARCH=x86_64 \
  DISTRI=rocky \
  FLAVOR=minimal-iso \
  VERSION=8.4 \
  BUILD="$(date +%Y%m%d).0"

Notable changes are to:

• not attempt to configure the network interface with the grub command line
• to specify the VERSION correctly and,
• to provide a unique BUILD identifier.