replace unbound w/ kresd, add user (needs ansible users bugfix for pw)

roles/server/files/kresd.conf

@@ -0,0 +1,12 @@
+-- Network interface configuration
+net.listen('127.0.0.1', 53, { kind = 'dns' })
+net.listen('127.0.0.1', 853, { kind = 'tls' })
+net.listen('::1', 53, { kind = 'dns', freebind = true })
+net.listen('::1', 853, { kind = 'tls', freebind = true })
+
+-- Load useful modules
+modules = {
+        'hints > iterate',  -- Allow loading /etc/hosts or custom root hints
+        'stats',            -- Track internal statistics
+        'predict',          -- Prefetch expiring/frequent records
+}