Fixed tests and templates to account for LDR rendering.

Tests/GraphicsTests/Framework/Editor/TestFramework.cs

                 yield return null;
             }
 
+            Camera testCamera = testSetup.cameraToUse;
-				             testSetup.hdr ? RenderTextureFormat.ARGBHalf : RenderTextureFormat.ARGB32,
+				             (testSetup.hdr && testCamera.allowHDR) ? RenderTextureFormat.ARGBHalf : RenderTextureFormat.ARGB32,
 				             24);
 			rtDesc.sRGB = PlayerSettings.colorSpace == ColorSpace.Linear;
 

Tests/GraphicsTests/RenderPipeline/LightweightPipeline/Scenes/005_LitBakedEmission.unity

 LightmapSettings:
   m_ObjectHideFlags: 0
   serializedVersion: 11
-  m_GIWorkflowMode: 1
+  m_GIWorkflowMode: 0
   m_GISettings:
     serializedVersion: 2
     m_BounceScale: 1

Tests/GraphicsTests/RenderPipeline/LightweightPipeline/Scenes/016_Lighting_Scene_Directional.unity

   m_EditorClassIdentifier: 
   renderPipeline: {fileID: 11400000, guid: e6987eea1dd29074597d54ed91a54a26, type: 2}
   cameraToUse: {fileID: 64132551}
-  hdr: 1
+  hdr: 0
   width: 1280
   height: 720
 --- !u!20 &64132551

Tests/GraphicsTests/RenderPipeline/LightweightPipeline/Scenes/017_Lighting_Scene_DirectionalBaked.unity

   m_EditorClassIdentifier: 
   renderPipeline: {fileID: 11400000, guid: e6987eea1dd29074597d54ed91a54a26, type: 2}
   cameraToUse: {fileID: 64132551}
-  hdr: 1
+  hdr: 0
   width: 1280
   height: 720
 --- !u!20 &64132551

Tests/GraphicsTests/RenderPipeline/LightweightPipeline/Scenes/018_Lighting_Scene_DirectionalBakedIndirect.unity

   m_EditorClassIdentifier: 
   renderPipeline: {fileID: 11400000, guid: e6987eea1dd29074597d54ed91a54a26, type: 2}
   cameraToUse: {fileID: 64132551}
-  hdr: 1
+  hdr: 0
   width: 1280
   height: 720
 --- !u!20 &64132551

Tests/GraphicsTests/RenderPipeline/LightweightPipeline/Scenes/019_Lighting_Scene_PointLights.unity

   m_EditorClassIdentifier: 
   renderPipeline: {fileID: 11400000, guid: e6987eea1dd29074597d54ed91a54a26, type: 2}
   cameraToUse: {fileID: 64132551}
-  hdr: 1
+  hdr: 0
   width: 1280
   height: 720
 --- !u!1 &167691301

Tests/GraphicsTests/RenderPipeline/LightweightPipeline/Scenes/020_Lighting_BasicDirectional.unity

   m_EditorClassIdentifier: 
   renderPipeline: {fileID: 11400000, guid: e6987eea1dd29074597d54ed91a54a26, type: 2}
   cameraToUse: {fileID: 889296556}
-  hdr: 1
+  hdr: 0
   width: 1280
   height: 720
 --- !u!20 &889296556

Tests/GraphicsTests/RenderPipeline/LightweightPipeline/Scenes/021_Lighting_BasicPoint.unity

   m_EditorClassIdentifier: 
   renderPipeline: {fileID: 11400000, guid: e6987eea1dd29074597d54ed91a54a26, type: 2}
   cameraToUse: {fileID: 889296556}
-  hdr: 1
+  hdr: 0
   width: 1280
   height: 720
 --- !u!20 &889296556

Tests/GraphicsTests/RenderPipeline/LightweightPipeline/Scenes/022_Lighting_BasicSpot.unity

   m_EditorClassIdentifier: 
   renderPipeline: {fileID: 11400000, guid: e6987eea1dd29074597d54ed91a54a26, type: 2}
   cameraToUse: {fileID: 889296556}
-  hdr: 1
+  hdr: 0
   width: 1280
   height: 720
 --- !u!20 &889296556