Add test framework to test

- Mail encryption (when expected)
- Introducer listing, adding and removing
- Locals listing, adding and removing

docker/mta_provision/opt/husk/config.toml

@@ -4,4 +4,24 @@ sequoia_home = "/tmp/sq_home"
 
 logfile_config = "./log4rs.yml"
 
-keyservers = [ "hkps://example.com" ]
+keyservers = [ "hkp://example.com" ]
+
+[logging.appenders.console]
+kind = "console"
+[logging.appenders.console.encoder]
+pattern = "{d(%Y-%m-%d %H:%M:%S)(local)} {h({l})} [{t}] {m}{n}"
+
+[logging.appenders.file]
+kind = "file"
+path = "/tmp/husk.log"
+
+[logging.appenders.file.encoder]
+pattern = "{d(%Y-%m-%d %H:%M:%S)(local)} {h({l})} [{t}] {m}{n}"
+
+[logging.root]
+level = "debug"
+appenders = ["file"]
+
+[logging.loggers."husk"]
+level = "debug"
+