add definitions of additional syslog levels

src/main/java/app/attestation/server/SyslogLevel.java

@@ -0,0 +1,21 @@
+package app.attestation.server;
+
+import java.util.logging.Level;
+
+public class SyslogLevel extends Level {
+    protected SyslogLevel(final String name, final int value) {
+        super(name, value);
+    }
+
+    static final Level EMERG = new SyslogLevel("EMERG", 1300);
+    static final Level ALERT = new SyslogLevel("ALERT", 1200);
+    static final Level CRIT = new SyslogLevel("CRIT", 1100);
+    static final Level ERR = Level.SEVERE; // 1000
+    static final Level WARNING = Level.WARNING; // 900
+    static final Level NOTICE = new SyslogLevel("NOTICE", 850);
+    static final Level INFO = Level.INFO; // 800
+    // Level.CONFIG is 700
+    // Level.FINE is 500
+    // Level.FINER is 400
+    static final Level DEBUG = Level.FINEST; // 300
+}