Replaced hpcloud with nxadm for tail package in Go

[vector-flow]

What this PR does / why we need it: This issue helps to migrate the dependency of the tail package in katib from https://github.com/hpcloud/tail to https://github.com/nxadm/tail. This change is required because hpcloud has not been maintaining their implementation of the tail package.

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged): Fixes https://github.com/kubeflow/katib/issues/2299

Checklist:

• [ ] Docs included if any changes are user facing

[google-oss-prow[bot]]

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