MON-3654: use Go standard errors package instead of github.com/pkg/errors

[machine424]

• I added CHANGELOG entry for this change.
• No user facing changes, so no entry in CHANGELOG was needed.

[openshift-ci-robot]

@machine424: This pull request references MON-3654 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the task to target the "4.16.0" version, but no target version was set.

In response to this:

• I added CHANGELOG entry for this change.
• No user facing changes, so no entry in CHANGELOG was needed.

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[machine424]

/retest

[machine424]

I'll see if we could enable strict unmarshalling in golangci

[machine424]

/retest

[machine424]

/retest

[machine424]

/retest

[jan--f]

Nice improvement, thanks.
I'm a bit confused about the import reordering. If there is a string reason, sure let's do it. But then lets add a comment (or even better commit message) about the why.

[machine424]

I'm a bit confused about the import reordering. If there is a string reason, sure let's do it. But then lets add a comment (or even better commit message) about the why.

It's done in the second commit:

chore: add errorlint and depguard linters and fix gci linter config

errorlint: 'check for code that could be problematic with the error wrapping scheme'
depguard: to prevent the use of the deprecated 'github.com/pkg/errors'.

I needed to configure depguard and discovered that the config of cgi which handles import ordering is broken, so had to fix it.

[jan--f]

Thanks!
/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jan--f, machine424

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[openshift-ci]

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