fix build of recent Bazel versions on Power9 + stick to Java/1.8 as dependency

[Flamefire]

• Stay with JDK8 (Java 1.8) as stated by Bazel docus
• Include patch from Failure builing on ppc64le: Executing genrule filter_netty_dynamic_libs bazelbuild/bazel#9263

Fixes #9450

[Flamefire]

Requires easybuilders/easybuild-easyblocks#1875 on Power9

[Flamefire]

Test report by @Flamefire
SUCCESS
Build succeeded for 4 out of 4 (4 easyconfigs in this PR)
taurusml8 - Linux RHEL 7.6, 8335-GTX, Python 2.7.5
See https://gist.github.com/699562329a8cc64f166bcbbf944e9c77 for a full test report.

[Flamefire]

Test report by @Flamefire
SUCCESS
Build succeeded for 6 out of 6 (4 easyconfigs in this PR)
taurusi1242.taurus.hrsk.tu-dresden.de - Linux RHEL 7.4, Intel(R) Xeon(R) CPU E5-2690 0 @ 2.90GHz, Python 2.7.5
See https://gist.github.com/a35575e7a590674c0f2eee2fa3d2da87 for a full test report.

[boegel]

Test report by @boegel
SUCCESS
Build succeeded for 4 out of 4 (4 easyconfigs in this PR)
node3131.skitty.os - Linux centos linux 7.7.1908, Intel(R) Xeon(R) Gold 6140 CPU @ 2.30GHz, Python 3.6.8
See https://gist.github.com/fa45ffdbdc6fe1184777fd08f0619ad8 for a full test report.

[boegel]

Test report by @boegel
SUCCESS
Build succeeded for 4 out of 4 (4 easyconfigs in this PR)
node2409.golett.os - Linux centos linux 7.7.1908, Intel(R) Xeon(R) CPU E5-2680 v3 @ 2.50GHz, Python 2.7.5
See https://gist.github.com/3fb1fe28957c7c24fad1bb0c23ab1f95 for a full test report.

[boegel]

We usually avoid changing dependency versions in existing easyconfigs, but in this case I think it's justified (as a bug fix), and in addition Bazel is only used as a build dependency for TensorFlow.
The passing easyconfigs test suite confirms that no version conflicts on Java have been introduced by this change.

@branfosj Are you up for submitting a test report for this, taking into account that you'll need to use the updated Bazel easyblock from easybuilders/easybuild-easyblocks#1875?

[boegel]

Test report by @boegel
SUCCESS
Build succeeded for 4 out of 4 (4 easyconfigs in this PR)
generoso - Linux centos linux 7.6.1810, Intel(R) Xeon(R) CPU E5-2660 v4 @ 2.00GHz, Python 3.6.8
See https://gist.github.com/269ee07dcd557ef98067e6ab1765615e for a full test report.

[branfosj]

Test report by @branfosj
SUCCESS
Build succeeded for 4 out of 4 (4 easyconfigs in this PR)
bear-pg0305u05a.bear.cluster - Linux RHEL 7.6, 8335-GTX, Python 2.7.5
See https://gist.github.com/9faa0934e68506990b343d33dc729c33 for a full test report.

[branfosj]

Looks good to me!

[Flamefire]

Great! If you don't mind I'll update easybuilders/easybuild-easyblocks#1875 to always use system JDK (only change for x86)

[boegel]

Test report by @boegel
SUCCESS
Build succeeded for 4 out of 4 (4 easyconfigs in this PR)
node3128.skitty.os - Linux centos linux 7.7.1908, Intel(R) Xeon(R) Gold 6140 CPU @ 2.30GHz, Python 3.6.8
See https://gist.github.com/fe82c8607b4e47f684ce1d8c6070d181 for a full test report.

[boegel]

lgtm

[boegel]

Going in, thanks @Flamefire!