CP-706: use s-exprs in audit log
CP-706: use s-exprs in audit log

djs55/xcp-rrdd,johnelse/xcp-rrdd,djs55/xcp-networkd,koushikcgit/xcp-rrdd,sharady/xcp-networkd,djs55/xcp-rrdd,koushikcgit/xcp-networkd,koushikcgit/xcp-rrdd,robhoes/squeezed,sharady/xcp-networkd,koushikcgit/xcp-rrdd,johnelse/xcp-rrdd,koushikcgit/xcp-networkd,djs55/xcp-networkd,simonjbeaumont/xcp-rrdd,djs55/squeezed,simonjbeaumont/xcp-rrdd