Add support for the new fallback spire-controller-manager feature #2086

Job	Run time
lint-chart	36s
checks	1m 32s
Build matrix	3s
test (v1.28.0)	17m 20s
upgrade-test (v1.28.0)	8m 52s
test (v1.27.3)	19m 43s
example-test (v1.28.0, examples/external-mysql)	3m 39s
integration-test (v1.28.0, tests/integration/production)	6m 8s
upgrade-test (v1.27.3)	8m 57s
test (v1.26.6)	20m 51s
example-test (v1.28.0, examples/nested-security)	6m 0s
integration-test (v1.27.3, tests/integration/production)	6m 5s
upgrade-test (v1.26.6)	6m 7s
example-test (v1.28.0, examples/tornjak)	3m 24s
integration-test (v1.26.6, tests/integration/production)	6m 4s
example-test (v1.28.0, examples/nested-full)	9m 44s
example-test (v1.28.0, examples/external-postgresql)	3m 39s
example-test (v1.28.0, examples/federation)	4m 17s
example-test (v1.28.0, examples/stateless-server)	3m 27s
example-test (v1.27.3, examples/external-mysql)	3m 24s
example-test (v1.27.3, examples/nested-security)	7m 51s
example-test (v1.27.3, examples/tornjak)	3m 11s
example-test (v1.27.3, examples/nested-full)	8m 19s
example-test (v1.27.3, examples/external-postgresql)	3m 26s
example-test (v1.27.3, examples/federation)	3m 35s
example-test (v1.27.3, examples/stateless-server)	3m 17s
example-test (v1.26.6, examples/external-mysql)	3m 54s
example-test (v1.26.6, examples/nested-security)	6m 4s
example-test (v1.26.6, examples/tornjak)	3m 29s
example-test (v1.26.6, examples/nested-full)	9m 23s
example-test (v1.26.6, examples/external-postgresql)	3m 31s
example-test (v1.26.6, examples/federation)	3m 50s
example-test (v1.26.6, examples/stateless-server)	3m 16s
	3h 22m 58s

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