Close #1843 Squashed commit of the following: commit cc82b373816b76a803d29e4baae18384aa0f8c67 Author: Simon Zolin <s.zolin@adguard.com> Date: Thu Aug 20 14:20:35 2020 +0300 * /control/dns_config: allow all valid bootstrap server notations * use dnsproxy v0.31.1