disable remote server tests for netCDF 4.9.0

[Micket]

(created using eb --new-pr)
Remote tests are bad. Server was down a while ago, and some people might not have internet access from the build nodes.

[Micket]

@boegelbot please test @ generoso

[Micket]

Test report by @Micket
SUCCESS
Build succeeded for 1 out of 1 (1 easyconfigs in total)
alvis-c1 - Linux Rocky Linux 8.5, x86_64, Intel Xeon Processor (Skylake), Python 3.6.8
See https://gist.github.com/43528f077c67200e4673e17a5b95cf33 for a full test report.

[boegelbot]

@Micket: Request for testing this PR well received on login1

PR test command 'EB_PR=16158 EB_ARGS= /opt/software/slurm/bin/sbatch --job-name test_PR_16158 --ntasks=4 ~/boegelbot/eb_from_pr_upload_generoso.sh' executed!

• exit code: 0
• output:

Submitted batch job 9083

Test results coming soon (I hope)...

- notification for comment with ID 1230650370 processed

Message to humans: this is just bookkeeping information for me,
it is of no use to you (unless you think I have a bug, which I don't).

[boegelbot]

Test report by @boegelbot
SUCCESS
Build succeeded for 1 out of 1 (1 easyconfigs in total)
cns1 - Linux Rocky Linux 8.5, x86_64, Intel(R) Xeon(R) CPU E5-2667 v3 @ 3.20GHz (haswell), Python 3.6.8
See https://gist.github.com/ee042027042ad8e0fbc714505e51ebf0 for a full test report.

[boegel]

lgtm

[boegel]

Going in, thanks @Micket!