HAProxy Ingress Controller v1.6.2

Changelog

9e334ce BUG/MINOR: remove cookie keyword from backend section if the annotation was deleted
c0b4235 BUILD: docker: Remove linux/ppc64le target to have parity with HAProxy Alpine images
657de6c BUILD: docker: Remove GOOS and GOARCH and use dumb-init from distro
0449045 BUG/MINOR: bind TCP services on adresses passed via flags --ipv4-bind-address and --ipv6-bind-address
c32e5b2 BUG/MINOR: pprof handler should be called in sync loop
00ca7a3 BUG/MINOR: external mode: copy haproxy.cfg form usr/local/etc/haproxy
6712329 DOC: Generalizes the 'backend-config-snippet' example
7a0774c BUILD: docker: Add Github actions for auto and manual multiarch builds for Docker Hub.