Migrate add-ons to be managed by addon-manager

[haoqing0110]

Describe the enhancement

In OCM v0.11.0, we introduced a new component called addon-manager to manage the add-on agent lifecycle. With this introduced, the addon agent has 2 ways to maintain the lifecycle:

• Let the addon controller itself manage by using framework code (the existing way).
• Let the addon-manager manage by defining spec.installStrategy in ClusterManagementAddOn.

To avoid conflict, we also introduced annotation addon.open-cluster-management.io/lifecycle in ClusterManagementAddOn to control whether the addon lifecycle is managed by self (framework) or addon-manager.

The addon-manager is disabled by default in OCM v0.11.0 and add-on is by default managed by self.

In OCM v0.12.0, the addon-manager is enabled by default and the addon is still default managed by self.

In the future, we plan to make the addons by default managed by addon-manager, so here is the addon-framework and addon-manager roadmap and migration plan.

---

OCM v0.12.0 (released)

• The addon-manager supports the latest addon API.
• The addon-manager is default enabled.
• The addon is default managed by self (addon-framework).

addon-framework 0.8.0 (released)

• Supports the latest addon API.

---

OCM v0.13.0 (released)

• The addon is default managed by self (addon-framework).
• The minimal supported addon-framework version is v0.8.0.

Addon-framework 0.9.0 (released)

• Mark WithInstallStrategy() as deprecated.
• The framework will force add annotation addon.open-cluster-management.io/lifecycle: self if the addon calls WithInstallStrategy().
• The framework requires patch permission on ClusterManagementAddon.

Addon-framework 0.8.1 (released)

• The framework will force add annotation addon.open-cluster-management.io/lifecycle: self if the addon calls WithInstallStragegy().
• The framework requires patch permission on ClusterManagementAddon.

---

OCM v0.14.0

• The addon is default managed by self (addon-framework).
• The minimal request addon-framework version is v0.8.1.
• Addon-manager will add annotation addon.open-cluster-management.io/lifecycle: addon-manager if self is not set.

Addon-framework 0.10.0

• Remove duplicate config controller code in framework.
• Remove WithInstallStrategy() func in framework.
• If use addon-framework, remove annotation addon.open-cluster-management.io/lifecycle: self.

---

OCM future

• The addon is default managed by addon-manager.
• The minimal supported addon-framework version is v0.8.1.

[haoqing0110]

cc @qiujian16 @zhiweiyin318 @zhujian7

[zhujian7]

@haoqing0110 Can you add a link to the code for WithInstallStrategy() in the description above? So the user can know which specific function was called that will be impacted?