- Update to version 1.21.5:
* Update to go1.16.8
* legacy-cloud-providers: aws: Add support for consuming web identity credentials
* e2e iperf2 change threshold to 10MBps = 80 Mbps
* Fix NodeAuthenticator tests in dual stack
* Fix the key missing issue for structured log
* Fix a small regression in Service updates
* Service: Fix semantics for Update wrt allocations
* Don't prematurely close reflectors in case of slow initialization in watch based manager
* Fix storage class setup in regional_pd.go
* backport 104410 to release-1.21
* pkg/kubelet/cm: use SkipFreezeOnSet
* vendor: bump runc to 1.0.2
* Switch to non-deprecated timestamppb.Now()
* Fix buckets initialization
* fix: ensure InstanceShutdownByProviderID return false for creating Azure VMs
* fix: skip case sensitivity when checking Azure NSG rules
* Keep MakeMountArgSensitive and add a new signature that receives flags
* Update the unit tests to handle mountFlags
* Add missing interface method in mount_unsupported.go
* Pass additional flags to subpath mount to avoid flakes in certain conditions
* Update CHANGELOG/CHANGELOG-1.21.md for v1.21.4
* Copy golang license to staging copies
* delete stale UDP conntrack entries for loadbalancer IPs
* Set idle and readheader timeouts