Fix bug with token expiration. Increase the default length of the pepper. Update hashes on startup with RotationPerRequest strategy. Don't check for existing pepper on the none hash algorithm.

src/main/java/io/kamax/mxisd/hash/HashEngine.java

@@ -56,6 +56,6 @@ public class HashEngine {
     }
 
     protected String newPepper() {
-        return RandomStringUtils.random(config.getPepperLength());
+        return RandomStringUtils.random(config.getPepperLength(), true, true);
     }
 }

src/main/java/io/kamax/mxisd/hash/rotation/RotationPerRequests.java

@@ -12,6 +12,7 @@ public class RotationPerRequests implements HashRotationStrategy {
     @Override
     public void register(HashEngine hashEngine) {
         this.hashEngine = hashEngine;
+        trigger();
     }
 
     @Override