Changed encodeURL logic in servlet response

The encodeURL should only encode when it is necessary and it’s adding a
session id to the URL for browsers that do not support cookies. The
framework doesn’t support cookies or session tracking so changed the
methods to return the plain urls. This addresses issue #27

Author: sapessi

aws-serverless-java-container-core/src/main/java/com/amazonaws/serverless/proxy/internal/servlet/AwsHttpServletResponse.java

@@ -91,25 +91,29 @@ public boolean containsHeader(String s) {
 
     @Override
     public String encodeURL(String s) {
-        return URLEncoder.encode(s);
+        // We do not support session tracking using the URL right now, we do not encode urls
+        return s;
     }
 
 
     @Override
     public String encodeRedirectURL(String s) {
-        return URLEncoder.encode(s);
+        // Return the URL without changing it, we do not support session tracking using URLs
+        return s;
     }
 
 
     @Override
+    @Deprecated
     public String encodeUrl(String s) {
-        return URLEncoder.encode(s);
+        return this.encodeURL(s);
     }
 
 
     @Override
+    @Deprecated
     public String encodeRedirectUrl(String s) {
-        return URLEncoder.encode(s);
+        return this.encodeRedirectURL(s);
     }