[WIP] Update to Cluster-API v1.6.0-rc.0

[joekr]

What this PR does / why we need it:

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #342

[joekr]

Unit Tests

make test
GOBIN=/Users/joekratzat/projects/cluster-api-provider-oci/hack/tools/bin ./scripts/go_install.sh sigs.k8s.io/controller-runtime/tools/setup-envtest setup-envtest v0.0.0-20230131074648-f5014c077fc3
kube-builder assets: /Users/joekratzat/Library/Application Support/io.kubebuilder.envtest/k8s/1.24.2-darwin-arm64
KUBEBUILDER_ASSETS="/Users/joekratzat/Library/Application Support/io.kubebuilder.envtest/k8s/1.24.2-darwin-arm64" go test -coverprofile=coverage.out ./... 
?       github.com/oracle/cluster-api-provider-oci      [no test files]
?       github.com/oracle/cluster-api-provider-oci/cloud/config [no test files]
?       github.com/oracle/cluster-api-provider-oci/cloud/metrics        [no test files]
?       github.com/oracle/cluster-api-provider-oci/cloud/scope/mocks    [no test files]
?       github.com/oracle/cluster-api-provider-oci/cloud/services/base  [no test files]
?       github.com/oracle/cluster-api-provider-oci/cloud/services/base/mock_base        [no test files]
?       github.com/oracle/cluster-api-provider-oci/cloud/services/compute/mock_compute  [no test files]
?       github.com/oracle/cluster-api-provider-oci/cloud/services/computemanagement     [no test files]
?       github.com/oracle/cluster-api-provider-oci/cloud/services/compute       [no test files]
?       github.com/oracle/cluster-api-provider-oci/cloud/services/computemanagement/mock_computemanagement      [no test files]
?       github.com/oracle/cluster-api-provider-oci/cloud/services/containerengine       [no test files]
?       github.com/oracle/cluster-api-provider-oci/cloud/services/containerengine/mock_containerengine  [no test files]
?       github.com/oracle/cluster-api-provider-oci/cloud/services/identity      [no test files]
?       github.com/oracle/cluster-api-provider-oci/cloud/services/identity/mock_identity        [no test files]
?       github.com/oracle/cluster-api-provider-oci/cloud/services/loadbalancer  [no test files]
?       github.com/oracle/cluster-api-provider-oci/cloud/services/loadbalancer/mock_lb  [no test files]
?       github.com/oracle/cluster-api-provider-oci/cloud/services/networkloadbalancer   [no test files]
?       github.com/oracle/cluster-api-provider-oci/cloud/services/networkloadbalancer/mock_nlb  [no test files]
?       github.com/oracle/cluster-api-provider-oci/cloud/services/vcn   [no test files]
?       github.com/oracle/cluster-api-provider-oci/cloud/services/vcn/mock_vcn  [no test files]
?       github.com/oracle/cluster-api-provider-oci/feature      [no test files]
?       github.com/oracle/cluster-api-provider-oci/version      [no test files]
ok      github.com/oracle/cluster-api-provider-oci/api/v1beta1  42.119s coverage: 23.7% of statements
ok      github.com/oracle/cluster-api-provider-oci/api/v1beta2  0.706s  coverage: 15.6% of statements
ok      github.com/oracle/cluster-api-provider-oci/cloud/ociutil        0.207s  coverage: 19.6% of statements
ok      github.com/oracle/cluster-api-provider-oci/cloud/scope  233.177s        coverage: 75.1% of statements
ok      github.com/oracle/cluster-api-provider-oci/cloud/util   1.125s  coverage: 61.1% of statements
ok      github.com/oracle/cluster-api-provider-oci/controllers  28.555s coverage: 58.7% of statements
ok      github.com/oracle/cluster-api-provider-oci/exp/api/v1beta1      12.844s coverage: 15.3% of statements
ok      github.com/oracle/cluster-api-provider-oci/exp/api/v1beta2      1.851s  coverage: 4.8% of statements
ok      github.com/oracle/cluster-api-provider-oci/exp/controllers      3.032s  coverage: 56.3% of statements
go tool cover -func=coverage.out -o coverage.txt
go tool cover -html=coverage.out -o coverage.html

e2e tests

[joekr]

done through #344