Add build dependency on tensorflow-sources to avoid build conflicts

[fwyzard]

By default, cmsBuild tries to build tensorflow-sources and tensorflow-python3-sources in parallel, leading to conflicts with the Bazel builds.
Declaring a build dependency on tensorflow-sources should force cmsBuild to build these packages one after the other.

[fwyzard]

@cmsbuild please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-any-integration/32084/console

[cmsbuild]

A new Pull Request was created by @fwyzard (Andrea Bocci) for branch IB/CMSSW_10_4_X/gcc700.

@cmsbuild, @smuzaffar, @gudrutis, @mrodozov can you please review it and eventually sign? Thanks.
You can sign-off by replying to this message having '+1' in the first line of your reply.
You can reject by replying to this message having '-1' in the first line of your reply.

[fwyzard]

it would make sense to merge this and #4564 at the same time, since updating eigen will anyway trigger a rebuild of tensorflow.

[mrodozov]

I understand you'll probably want this because it's a fast(er) solution, but consider we are nearly finished with tf 1.12 (see #4560). Fails only on arm (which I'm dealing with), thats why we are not adjusting cmssw already. I'm just saying this might be redundant.
However it's good to know building tf_src and tf_py3_src at the same time might be problematic, I'll try to trick it the same way

[fwyzard]

@mrodozov I'm curious, am I the only one that builds packages with --builders 4 or anyway more than one tool at a time ?

[mrodozov]

No, https://github.com/cms-sw/cms-bot/blob/master/run-cmsdist-tests.sh#L120 but I'm not using it (out of habit) hence haven't had that trouble building tensorflow.

[fwyzard]

OK, no problem.

[cmsbuild]

+1
Tested at: 4263e0c
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-4566/32084/summary.html

[cmsbuild]

Comparison job queued.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-4566/32084/summary.html

Comparison Summary:

• No significant changes to the logs found
• Reco comparison results: 0 differences found in the comparisons
• DQMHistoTests: Total files compared: 33
• DQMHistoTests: Total histograms compared: 3136422
• DQMHistoTests: Total failures: 1
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 3136217
• DQMHistoTests: Total skipped: 204
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 32 files compared)
• Checked 137 log files, 14 edm output root files, 33 DQM output files