cert-manager/fluentbit: upgrade-strategy delete

[dkoshkin]

What type of PR is this?

Bug

What this PR does/ why we need it:

The Deployment selectors changed for fluentbit and cert-manager, need to use the delete upgrade-strategy.

Which issue(s) this PR fixes:

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

- cert-manager: The Deployment selectors were changed, use `delete` `upgrade-strategy`.
- fluentbit: The Deployment selectors were changed, use `delete` `upgrade-strategy`.

Checklist

• The commit message explains the changes and why are needed.
• The code builds and passes lint/style checks locally.
• The relevant subset of integration tests pass locally.
• The core changes are covered by tests.
• The documentation is updated where needed.

[gracedo]

Can you bump the catalog.kubeaddons.mesosphere.io/addon-revision's, otherwise lgtm!

[dkoshkin]

Tested locally by upgrading from Konvoy v1.5.2 to this with https://github.com/mesosphere/kubeaddons/pull/1017

➜ helm3 list -a -A
NAME                                     	NAMESPACE   	REVISION	UPDATED                                	STATUS  	CHART                       	APP VERSION
cert-manager-kubeaddons                  	cert-manager	1       	2020-10-05 20:50:00.179778921 +0000 UTC	deployed	cert-manager-setup-0.1.17   	0.10.1
fluentbit-kubeaddons                     	kubeaddons  	1       	2020-10-05 20:48:28.866147081 +0000 UTC	deployed	fluent-bit-0.7.1            	1.5.6

➜  k logs -n kubeaddons     kubeaddons-controller-manager-898959d54-6965r | grep "upgrade strategy:"
2020-10-05T20:48:24.864Z	INFO	kubeaddons-controller.Addon.Helm3.Deploy	upgrade strategy: "delete", will perform cleanup first	{"Addon": "fluentbit", "namespace": "kubeaddons", "chart": "fluent-bit", "addon": "fluentbit", "version": "0.7.1", "valuesCRC32": "4ed54791"}
2020-10-05T20:49:10.398Z	INFO	kubeaddons-controller.Addon.Helm3.Deploy	upgrade strategy: "delete", will perform cleanup first	{"ClusterAddon": "cert-manager", "namespace": "cert-manager", "chart": "cert-manager-setup", "addon": "cert-manager", "version": "0.1.17", "valuesCRC32": "d4b07319"}
2020-10-05T20:49:58.518Z	INFO	kubeaddons-controller.Addon.Helm3.Deploy	upgrade strategy: "delete", will perform cleanup first	{"ClusterAddon": "cert-manager", "namespace": "cert-manager", "chart": "cert-manager-setup", "addon": "cert-manager", "version": "0.1.17", "valuesCRC32": "d4b07319"}