cp(v0.37.x): feat: invalidate SSM cache upon AMI deprecation (#7301)

[jmdeal]

Fixes #N/A

Description
Backport #7301 to v0.37.x. This backport did require some more substantial changes due to the changes in AMI discovery between v1 and v0.37.

How was this change tested?
make test

Does this change impact docs?

• Yes, PR includes docs updates
• Yes, issue opened: #
• No

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

[coveralls]

Pull Request Test Coverage Report for Build 11710908157

Details

• 123 of 154 (79.87%) changed or added relevant lines in 11 files are covered.
• 2 unchanged lines in 2 files lost coverage.
• Overall coverage decreased (-0.06%) to 78.636%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pkg/fake/ssmapi.go	26	27	96.3%
pkg/controllers/controllers.go	0	2	0.0%
pkg/providers/amifamily/ami.go	15	17	88.24%
pkg/apis/v1/ec2nodeclass.go	15	18	83.33%
pkg/operator/operator.go	0	5	0.0%
pkg/controllers/providers/ssm/invalidation/controller.go	34	42	80.95%
pkg/apis/v1/zz_generated.deepcopy.go	0	10	0.0%

Files with Coverage Reduction	New Missed Lines	%
pkg/providers/amifamily/ami.go	1	90.16%
pkg/fake/ssmapi.go	1	90.24%

Totals
Change from base Build 11470225379:	-0.06%
Covered Lines:	5974
Relevant Lines:	7597

---

💛 - Coveralls

[rschalo]

LGTM