drop support for versions < 2.0 and replace run_cmd with run_shell_cmd in custom easyblock for ScaLAPACK (scalapack.py)

[branfosj]

(created using eb --new-pr)

Oldest easyconfigs in the archive are for 2.x, so we should drop support for < 2.

[branfosj]

Test report by @branfosj

Overview of tested easyconfigs (in order)

• SUCCESS ScaLAPACK-2.2.0-gompi-2022b-fb.eb

Build succeeded for 1 out of 1 (1 easyconfigs in total)
bear-pg0105u03a - Linux RHEL 8.6, x86_64, Intel(R) Xeon(R) Platinum 8360Y CPU @ 2.40GHz (icelake), Python 3.6.8
See https://gist.github.com/branfosj/05114b045ac0329a966eeb86f5067f1f for a full test report.

[boegel]

lgtm

[boegel]

@boegelbot please test @ jsc-zen3
EB_BRANCH="5.0.x"
EB_ARGS="ScaLAPACK-2.2.0-gompi-2023b-fb.eb --installpath /tmp/$USER/pr3106"

[boegelbot]

@boegel: Request for testing this PR well received on jsczen3l1.int.jsc-zen3.fz-juelich.de

PR test command 'if [[ "5.0.x" != 'develop' ]]; then EB_BRANCH="5.0.x" ./easybuild_develop.sh 2> /dev/null 1>&2; EB_PREFIX=/home/boegelbot/easybuild/"5.0.x" source init_env_easybuild_develop.sh; fi; EB_PR=3106 EB_ARGS="ScaLAPACK-2.2.0-gompi-2023b-fb.eb --installpath /tmp/$USER/pr3106" EB_REPO=easybuild-easyblocks EB_BRANCH="5.0.x" /opt/software/slurm/bin/sbatch --job-name test_PR_3106 --ntasks=8 ~/boegelbot/eb_from_pr_upload_jsc-zen3.sh' executed!

• exit code: 0
• output:

Submitted batch job 3511

Test results coming soon (I hope)...

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it is of no use to you (unless you think I have a bug, which I don't).

[boegelbot]

Test report by @boegelbot

Overview of tested easyconfigs (in order)

• SUCCESS ScaLAPACK-2.2.0-gompi-2023b-fb.eb

Build succeeded for 1 out of 1 (1 easyconfigs in total)
jsczen3c1.int.jsc-zen3.fz-juelich.de - Linux Rocky Linux 9.3, x86_64, AMD EPYC-Milan Processor (zen3), Python 3.9.18
See https://gist.github.com/boegelbot/258f6343e41d6a9324d1b4ad17693de6 for a full test report.