Removed GOARCH dependency for multiarch support

[pranavpandit1]

These changes are targeted to remove the arch-specific dependency.
Also, these changes are verified for Intel and ppc64le.

[gaocegege]

Thanks for your contribution! 🎉 👍

/lgtm

[coveralls]

Pull Request Test Coverage Report for Build 3271684338

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 17 unchanged lines in 2 files lost coverage.
• Overall coverage decreased (-21.6%) to 18.354%

---

Files with Coverage Reduction	New Missed Lines	%
pkg/controller.v1/mpi/mpijob_controller.go	8	77.46%
pkg/controller.v1/pytorch/pytorchjob_controller.go	9	61.81%

Totals
Change from base Build 3132871820:	-21.6%
Covered Lines:	281
Relevant Lines:	1531

---

💛 - Coveralls

[johnugeorge]

/cc @tenzen-y

[tenzen-y]

Thanks!
/lgtm

[johnugeorge]

/approve

[google-oss-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: johnugeorge, pranavpandit1

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