Merge pull request #286 from fgonzal/master

QRest: add `enable-protocol` to the documentation.

doc/src/asciidoc/module_qrest.adoc

@@ -43,6 +43,8 @@ we've created a little **QRest** module that can be configured like this:
   <property name="enabled-cipher" value="TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA" />  <9>
   <property name="enabled-cipher" value="TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256" />
   <property name="enabled-cipher" value="TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384" />
+  <property name="enable-protocol" value="TLSv1.2" />                             <10>
+  <property name="enable-protocol" value="TLSv1.3" />
   ...
   ...
 </qrest>
@@ -55,7 +57,8 @@ we've created a little **QRest** module that can be configured like this:
 <6> Keystore location
 <7> Store password
 <8> Key password
-<9> Enabled ciphers (optional, defaults to 'all' if not present)
+<9> Enabled cipher suites (optional, defaults to 'all' if not present)
+<10> Enabled protocols (optional, defaults to 'all' if not present)
 
 Once the server receives an HTTP request, it creates a `org.jpos.transaction.Context`, places a reference to the http request
 (under the Constant name `REQUEST` defined in the `org.jpos.qrest.Constants` enum), and to the session in the `SESSION`