fix: Change type to hash on KubeReserved and SystemReserved

[engedaam]

Fixes #1080

Description

• To allow drift to happen on the on KubeReserved and SystemReserved, we need to update the type to be a map[string]string so that we can hash on the values

How was this change tested?

• make presubmit

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[k8s-ci-robot]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[coveralls]

Pull Request Test Coverage Report for Build 8486657056

Details

• 11 of 13 (84.62%) changed or added relevant lines in 2 files are covered.
• 11 unchanged lines in 3 files lost coverage.
• Overall coverage decreased (-0.02%) to 78.928%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pkg/apis/v1beta1/nodeclaim_validation.go	7	9	77.78%

Files with Coverage Reduction	New Missed Lines	%
pkg/controllers/disruption/drift.go	2	90.63%
pkg/apis/v1beta1/nodeclaim_validation.go	2	90.59%
pkg/controllers/provisioning/scheduling/preferences.go	7	86.67%

Totals
Change from base Build 8483818355:	-0.02%
Covered Lines:	8274
Relevant Lines:	10483

---

💛 - Coveralls

[njtran]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: engedaam, njtran

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [njtran]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment