update custom easyblock for Tensorflow for versions 2.14 + 2.15

[yqshao]

In connection to easyconfigs#20191, this PR reflects changes in tensorflow 2.14 & 2.15:

• removed opt_einsum from valid systemlibs: tf@fce6afd3b
• new config env for disabling clang: tf@777dfc8b91
• python version for hermetic python: tf@e85860e83

[boegel]

@boegelbot please test @ jsc-zen3
EB_ARGS="--installpath /tmp/pr3303 TensorFlow-2.13.0-foss-2023a.eb TensorFlow-2.15.1-foss-2023a.eb"

[boegel]

lgtm

[boegelbot]

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

PR test command 'if [[ develop != 'develop' ]]; then EB_BRANCH=develop ./easybuild_develop.sh 2> /dev/null 1>&2; EB_PREFIX=/home/boegelbot/easybuild/develop source init_env_easybuild_develop.sh; fi; EB_PR=3303 EB_ARGS="--installpath /tmp/pr3303 TensorFlow-2.13.0-foss-2023a.eb TensorFlow-2.15.1-foss-2023a.eb" EB_REPO=easybuild-easyblocks EB_BRANCH=develop /opt/software/slurm/bin/sbatch --job-name test_PR_3303 --ntasks=8 ~/boegelbot/eb_from_pr_upload_jsc-zen3.sh' executed!

• exit code: 0
• output:

Submitted batch job 4510

Test results coming soon (I hope)...

- notification for comment with ID 2206352472 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

Overview of tested easyconfigs (in order)

• SUCCESS TensorFlow-2.13.0-foss-2023a.eb
• SUCCESS TensorFlow-2.15.1-foss-2023a.eb

Build succeeded for 2 out of 2 (2 easyconfigs in total)
jsczen3c1.int.jsc-zen3.fz-juelich.de - Linux Rocky Linux 9.4, x86_64, AMD EPYC-Milan Processor (zen3), Python 3.9.18
See https://gist.github.com/boegelbot/04732ba24c71eabb122889a5a92ad9f3 for a full test report.