Rename SSS quality levels

com.unity.render-pipelines.high-definition/HDRP/Editor/RenderPipeline/Settings/RenderPipelineSettingsUI.cs

             EditorGUILayout.PropertyField(d.supportOnlyForward, _.GetContent("Support Only Forward|Remove all the memory and shader variant of GBuffer. The renderer can be switch to deferred anymore."));
             EditorGUILayout.PropertyField(d.supportMotionVectors, _.GetContent("Support Motion Vectors|Motion vector are use for Motion Blur, TAA, temporal re-projection of various effect like SSR."));
             EditorGUILayout.PropertyField(d.supportStereo, _.GetContent("Support Stereo Rendering"));
-            EditorGUILayout.PropertyField(d.enableUltraQualitySSS, _.GetContent("Increase SSS Sample Count|This allow better SSS quality. Warning: Slow feature, don't use for game."));
+            EditorGUILayout.PropertyField(d.increaseSssSampleCount, _.GetContent("Increase SSS Sample Count|This allow better SSS quality. Warning: Slow feature, don't use for game."));
             EditorGUILayout.PropertyField(d.supportVolumetric, _.GetContent("Support volumetric|Enable memory and shader variant for volumetric."));
             EditorGUILayout.PropertyField(d.supportRuntimeDebugDisplay, _.GetContent("Support runtime debug display|Remove all debug display shader variant only in the player. Allow faster build."));
             EditorGUILayout.PropertyField(d.supportDitheringCrossFade, _.GetContent("Support dithering cross fade|Remove all dithering cross fade shader variant only in the player. Allow faster build."));

com.unity.render-pipelines.high-definition/HDRP/Editor/RenderPipeline/Settings/SerializedRenderPipelineSettings.cs

         public SerializedProperty supportOnlyForward;
         public SerializedProperty supportMotionVectors;
         public SerializedProperty supportStereo;
-        public SerializedProperty enableUltraQualitySSS;
+        public SerializedProperty increaseSssSampleCount;
         public SerializedProperty supportVolumetric;
         public SerializedProperty supportRuntimeDebugDisplay;
         public SerializedProperty supportDitheringCrossFade;
             supportOnlyForward = root.Find((RenderPipelineSettings s) => s.supportOnlyForward);
             supportMotionVectors = root.Find((RenderPipelineSettings s) => s.supportMotionVectors);
             supportStereo = root.Find((RenderPipelineSettings s) => s.supportStereo);
-            enableUltraQualitySSS = root.Find((RenderPipelineSettings s) => s.enableUltraQualitySSS);
+            increaseSssSampleCount = root.Find((RenderPipelineSettings s) => s.increaseSssSampleCount);
             supportVolumetric = root.Find((RenderPipelineSettings s) => s.supportVolumetric);
             supportRuntimeDebugDisplay = root.Find((RenderPipelineSettings s) => s.supportRuntimeDebugDisplay);
             supportDitheringCrossFade = root.Find((RenderPipelineSettings s) => s.supportDitheringCrossFade);

com.unity.render-pipelines.high-definition/HDRP/HDRenderPipelineAsset.asset

     supportSSAO: 1
     supportSubsurfaceScattering: 1
     supportOnlyForward: 0
-    enableUltraQualitySSS: 0
+    increaseSssSampleCount: 0
     supportVolumetric: 1
     supportRuntimeDebugDisplay: 1
     supportDitheringCrossFade: 1

com.unity.render-pipelines.high-definition/HDRP/Material/SubsurfaceScattering/SubsurfaceScattering.compute

 // Definitions
 //--------------------------------------------------------------------------------------------------
 
-#pragma kernel SubsurfaceScatteringQualityNormal SubsurfaceScattering=SubsurfaceScatteringQualityNormal SSS_ENABLE_NEAR_FIELD=0
-#pragma kernel SubsurfaceScatteringQualityUltra  SubsurfaceScattering=SubsurfaceScatteringQualityUltra  SSS_ENABLE_NEAR_FIELD=1
+#pragma kernel SubsurfaceScatteringMQ SubsurfaceScattering=SubsurfaceScatteringMQ SSS_ENABLE_NEAR_FIELD=0
+#pragma kernel SubsurfaceScatteringHQ SubsurfaceScattering=SubsurfaceScatteringHQ SSS_ENABLE_NEAR_FIELD=1
 
 // #pragma enable_d3d11_debug_symbols
 // TODO: use sharp load hoisting on PS4.

com.unity.render-pipelines.high-definition/HDRP/Material/SubsurfaceScattering/SubsurfaceScatteringManager.cs

         public void Build(HDRenderPipelineAsset hdAsset)
         {
             // Disney SSS (compute + combine)
-            string kernelName = hdAsset.renderPipelineSettings.enableUltraQualitySSS ? "SubsurfaceScatteringQualityUltra" : "SubsurfaceScatteringQualityNormal";
+            string kernelName = hdAsset.renderPipelineSettings.increaseSssSampleCount ? "SubsurfaceScatteringHQ" : "SubsurfaceScatteringMQ";
             m_SubsurfaceScatteringCS = hdAsset.renderPipelineResources.subsurfaceScatteringCS;
             m_SubsurfaceScatteringKernel = m_SubsurfaceScatteringCS.FindKernel(kernelName);
             m_CombineLightingPass = CoreUtils.CreateEngineMaterial(hdAsset.renderPipelineResources.combineLighting);

com.unity.render-pipelines.high-definition/HDRP/RenderPipeline/Settings/RenderPipelineSettings.cs

         public bool supportSubsurfaceScattering = true;
         [FormerlySerializedAs("supportForwardOnly")]
         public bool supportOnlyForward = false;
-        public bool enableUltraQualitySSS = false;
+        public bool increaseSssSampleCount = false;
         public bool supportVolumetric = true;
 
         // reduce variant