Change isort profile to black for full compatibility

[Ygnas]

What this PR does / why we need it:
Change isort profile to black for full compatibility as per @andreyvelich request

Which issue(s) this PR fixes (optional, in Fixes #<issue number>, #<issue number>, ... format, will close the issue(s) when PR gets merged):
Fixes #

Checklist:

• Docs included if any changes are user facing

[coveralls]

Pull Request Test Coverage Report for Build 10562711788

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 2 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.02%) to 33.469%

---

Files with Coverage Reduction	New Missed Lines	%
pkg/controller.v1/mpi/mpijob_controller.go	2	81.05%

Totals
Change from base Build 10512072223:	-0.02%
Covered Lines:	3949
Relevant Lines:	11799

---

💛 - Coveralls

[tenzen-y]

Thank you!
/lgtm
/approve

[google-oss-prow]

[APPROVALNOTIFIER] This PR is APPROVED

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