Read zone information from PowerFlex secret

[EvgenyUglov]

Description

PR adds the method to read the zoning information from the PowerFlex array secret

GitHub Issues

List the GitHub issues impacted by this PR:

GitHub Issue #
dell/csm#1613

Checklist:

• I have performed a self-review of my own code to ensure there are no formatting, vetting, linting, or security issues
• I have verified that new and existing unit tests pass locally with my changes
• I have not allowed coverage numbers to degenerate
• I have maintained at least 90% code coverage
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• I have maintained backward compatibility
• I have executed the relevant end-to-end test scenarios

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Please also list any relevant details for your test configuration

• unit tests

# go test ./... -cover -count=1
        github.com/dell/csm-operator            coverage: 0.0% of statements
        github.com/dell/csm-operator/api/v1             coverage: 0.0% of statements
        github.com/dell/csm-operator/core               coverage: 0.0% of statements
?       github.com/dell/csm-operator/pkg/constants      [no test files]
        github.com/dell/csm-operator/core/semver                coverage: 0.0% of statements
        github.com/dell/csm-operator/pkg/logger         coverage: 0.0% of statements
        github.com/dell/csm-operator/tests/shared               coverage: 0.0% of statements
        github.com/dell/csm-operator/tests/shared/clientgoclient                coverage: 0.0% of statements
        github.com/dell/csm-operator/tests/shared/crclient              coverage: 0.0% of statements
ok      github.com/dell/csm-operator/controllers        55.926s coverage: 89.1% of statements
ok      github.com/dell/csm-operator/k8s        0.103s  coverage: 90.3% of statements
ok      github.com/dell/csm-operator/pkg/drivers        0.396s  coverage: 96.1% of statements
ok      github.com/dell/csm-operator/pkg/modules        2.397s  coverage: 89.7% of statements
ok      github.com/dell/csm-operator/pkg/resources/configmap    0.094s  coverage: 100.0% of statements
ok      github.com/dell/csm-operator/pkg/resources/csidriver    0.105s  coverage: 100.0% of statements
ok      github.com/dell/csm-operator/pkg/resources/daemonset    0.079s  coverage: 100.0% of statements
ok      github.com/dell/csm-operator/pkg/resources/deployment   0.069s  coverage: 100.0% of statements
ok      github.com/dell/csm-operator/pkg/resources/rbac 0.070s  coverage: 100.0% of statements
ok      github.com/dell/csm-operator/pkg/resources/serviceaccount       0.068s  coverage: 100.0% of statements
ok      github.com/dell/csm-operator/pkg/utils  3.158s  coverage: 81.9% of statements

• E2E tests (PowerFlex suite only)