Revert "fix: reset address_set when delete subnet"

fix: reset address_set when delete subnet

test: statefulset without ippool

fix: ipv6 policy route

Solve the problem of non-standard statefulset creation mode

feat: support gw qos

perf: use policy-route to replace src-ip route

Reduce number of openflow need to be installed on node.

action: use commit as image tag

Add libatomic to docker image

chore: save disk space when building

In ARM64 image, ovn-central pods crashed due to missing libatomic. Resolve this problem by installing libatomic in image build steps.

chore: change crd form v1beta1 to v1

kubectl-ko: add ovs-tracing info

pinger: add metrics to resolve external address

chore: update ovn to 20.06

feat: use never used address first to reduce conflict

ci: use tmpfs to accelerate build and e2e

fix: create/delete order might lead ip conflict