TaintNodeNotReady will be added when node is not ready and feature-gate for TaintBasedEvictions flag is enabled, and removed when node becomes ready.

TaintNodeUnreachable will be added when node becomes unreachable (corresponding to NodeReady status ConditionUnknown) and feature-gate for TaintBasedEvictions flag is enabled, and removed when node becomes reachable (NodeReady status ConditionTrue).

NotReadyTaintTemplate is the taint for when a node is not ready for executing pods.

UnreachableTaintTemplate is the taint for when a node becomes unreachable.