[Server] Various code cleaning for server cache manager and WMTS service

Author: rldhont

src/server/qgsserverinterfaceimpl.h

@@ -72,6 +72,7 @@ class QgsServerInterfaceImpl : public QgsServerInterface
     /**
      * Gets the helper over all the registered server cache filters
      * \returns the server cache helper
+     * \since QGIS 3.4
      */
     QgsServerCacheManager *cacheManager() const override { return mCacheManager.get(); }
 

src/server/services/wmts/qgswmts.cpp

@@ -31,7 +31,7 @@ namespace QgsWmts
    * \ingroup server
    * \class QgsWmts::Service
    * \brief OGC web service specialized for WMTS
-   * \since QGIS 3.0
+   * \since QGIS 3.4
    */
   class Service: public QgsService
   {
@@ -68,7 +68,7 @@ namespace QgsWmts
         }
 
         // Get the request
-        QString req = params.value( QStringLiteral( "REQUEST" ) );
+        QString req = params.value( QgsServerParameter::name( QgsServerParameter::REQUEST ) );
         if ( req.isEmpty() )
         {
           throw QgsServiceException( QStringLiteral( "OperationNotSupported" ),

src/server/services/wmts/qgswmtsgettile.cpp

@@ -1,5 +1,5 @@
 /***************************************************************************
-                              qgswmsgetmap.cpp
+                              qgswmtsgettile.cpp
                             -------------------------
   begin                : July 23 , 2017
   copyright            : (C) 2018 by René-Luc D'Hont

src/server/services/wmts/qgswmtsgettile.h

@@ -1,5 +1,5 @@
 /***************************************************************************
-                              qgswmsgettile.h
+                              qgswmtsgettile.h
                             -------------------------
   begin                : July 23 , 2017
   copyright            : (C) 2018 by René-Luc D'Hont

src/server/services/wmts/qgswmtsserviceexception.h

@@ -1,7 +1,7 @@
 /***************************************************************************
                               qgswmtsserviceexception.h
                               ------------------------
-  begin                : July 23, 2017
+  begin                : July 23, 2018
   copyright            : (C) 2018 by René-Luc D'Hont
   email                : rldhont at 3liz dot com
 ***************************************************************************/
@@ -28,8 +28,8 @@ namespace QgsWmts
   /**
    * \ingroup server
    * \class  QgsWmts::QgsServiceException
-   * \brief Exception class for WFS services
-   * \since QGIS 3.0
+   * \brief Exception class for WMTS services
+   * \since QGIS 3.4
    */
   class QgsServiceException : public QgsOgcServiceException
   {

src/server/services/wmts/qgswmtsutils.h

@@ -27,6 +27,7 @@
 /**
  * \ingroup server
  * WMTS implementation
+ * \since QGIS 3.4
  */
 
 //! WMTS implementation