addon is default managed by addon-manager

[haoqing0110]

Describe the enhancement
A clear and concise description of what the enhancement request is.

Next step of #355 , when most of the addons migrate to be managed by addon-manager.

OCM future

• The Addon-manager will not add annotation addon.open-cluster-management.io/lifecycle: addon-manager to cma any more and the addon is default (no annotation) managed by addon-manager.
• The minimal supported addon-framework version is v0.8.1.

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