Is this a BUG REPORT or FEATURE REQUEST?:

/kind feature

Description:

Promote TaintBasedEvictions to beta in 1.13.

Tasks:

• Simplify taint manager workqueue keys (Simplify taint manager workqueue keys #65350)
• Increase the code coverage of NodeLifecycleController (Increase the code coverage of NodeController (TaintBasedEviction feature) #54297)
• enable and improve e2e of NoExecuteTaintManager (enable and improve e2e of NoExecuteTaintManager #69657)
• add e2e tests for TaintBasedEvictions (add e2e tests for TaintBasedEvictions #69796)
• Add test cases for taintbasedevictions (Add test cases for taintbasedevictions #69788)
• enable TaintBasedEvictions in pkg/features/kube_features.go (promote TaintBasedEvictions featuregate to beta #69824)
• documents update in k/website (docs update to promote TaintBasedEvictions to beta website#10765)

Links:

• Feature: Taint Based Eviction enhancements#166