chore: Merge upstream changes 20210629

[edreed]

What type of PR is this?

/kind cleanup

What this PR does / why we need it:

1. Merges changes from upstream as of 6/29/2021.
2. Implements fix: reduce GetDisk in AttachDisk kubernetes-sigs/azuredisk-csi-driver#904 for CloudProvisioner.

Which issue(s) this PR fixes:

Requirements:

• uses conventional commit messages
• includes documentation
• adds unit tests
• tested upgrade from previous version

Special notes for your reviewer:

Release note:

none

[coveralls]

Pull Request Test Coverage Report for Build 983552101

• 1 of 22 (4.55%) changed or added relevant lines in 3 files are covered.
• 3 unchanged lines in 2 files lost coverage.
• Overall coverage decreased (-0.006%) to 36.209%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pkg/azuredisk/azuredisk.go	0	9	0.0%
pkg/azuredisk/controllerserver.go	0	12	0.0%

Files with Coverage Reduction	New Missed Lines	%
pkg/azuredisk/controllerserver.go	1	12.33%
pkg/azuredisk/azuredisk_v2.go	2	19.08%

Totals
Change from base Build 981092656:	-0.006%
Covered Lines:	1192
Relevant Lines:	3292

---

💛 - Coveralls