Veermeer - v2.1.6

What's Changed

• [PSL-1127] implement health check challenges by @j-rafique in #801
• [PSL-1128] implement health check summary stats api by @j-rafique in #818
• [PSL-1129] implement health check detailed logs api by @j-rafique in #832
• fix edge case in p2p closest contacts calculation by @mateeullahmalik in #833
• [PSL-1137] remove required keys from watchlist by @mateeullahmalik in #834
• [PSL-1138] remove debug logs from storage & healthcheck challenges by @j-rafique in #835
• remove debug logs from self-healing by @j-rafique in #836
• add logs to metrics endpoints by @j-rafique in #837

Full Changelog: v2.1.5...v2.1.6