Change deprecated zone and region label with new labels

[viveksinghggits]

Change Overview

While creating PV we set annotations to define the topology of the PV. The annotations that were being used are deprecated and this PR makes sure that we change them and use the new respective annotations.

Pull request type

Please check the type of change your PR introduces:

• 🚧 Work in Progress
• 🌈 Refactoring (no functional changes, no api changes)
• 🐹 Trivial/Minor
• 🐛 Bugfix
• 🌻 Feature
• 🗺️ Documentation
• 🤖 Test

Issues

• fixes #issue-number

Test Plan

• 💪 Manual
• ⚡ Unit test
• 💚 E2E

kanister/pkg/function (use-correct-topology-labels*) » go test -check.f "CreateVolumeSnapshotTestSuite"                  
OK: 1 passed
PASS
ok  	github.com/kanisterio/kanister/pkg/function	39.246s


kanister/pkg/blockstorage/zone (use-correct-topology-labels*) » go test -check.f "ZoneSuite"
...
...
OK: 7 passed, 1 skipped
PASS
ok  	github.com/kanisterio/kanister/pkg/blockstorage/zone	30.058s

[hairyhum]

A bunch of tests also use FDZoneLabelName. Should they be updated?

[viveksinghggits]

A bunch of tests also use FDZoneLabelName. Should they be updated?

hmm, I noticed them and thought maybe the should be handled by another PR, but I can make that change in this PR itself.

[viveksinghggits]

Hi @hairyhum ,
I have made the change. I have knowingly not changed all the occurrences to new label to make sure that we have handling for both deprecated as well as new label.