Fixed test scene 2103 baking sky.

Tests/GraphicsTests/RenderPipeline/HDRenderPipeline/Scenes/2xxx_Lighting/2103_BakeMixed.unity

   m_AmbientSkyColor: {r: 0.212, g: 0.227, b: 0.259, a: 1}
   m_AmbientEquatorColor: {r: 0.114, g: 0.125, b: 0.133, a: 1}
   m_AmbientGroundColor: {r: 0.047, g: 0.043, b: 0.035, a: 1}
-  m_AmbientIntensity: 0
+  m_AmbientIntensity: 1
   m_AmbientMode: 0
   m_SubtractiveShadowColor: {r: 0.42, g: 0.478, b: 0.627, a: 1}
   m_SkyboxMaterial: {fileID: 0}
   m_DefaultReflectionMode: 0
   m_DefaultReflectionResolution: 128
   m_ReflectionBounces: 1
-  m_ReflectionIntensity: 0
+  m_ReflectionIntensity: 1
-  m_IndirectSpecularColor: {r: 0, g: 0, b: 0, a: 0}
+  m_IndirectSpecularColor: {r: 0, g: 0, b: 0, a: 1}
   m_UseRadianceAmbientProbe: 0
 --- !u!157 &3
 LightmapSettings:
   m_Component:
   - component: {fileID: 168196011}
   - component: {fileID: 168196010}
+  - component: {fileID: 168196012}
   m_Layer: 0
   m_Name: Scene Settings
   m_TagString: Untagged
   m_Father: {fileID: 0}
   m_RootOrder: 1
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
+--- !u!114 &168196012
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_PrefabParentObject: {fileID: 0}
+  m_PrefabInternal: {fileID: 0}
+  m_GameObject: {fileID: 168196009}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: 441482e8936e35048a1dffac814e3ef8, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
+  m_Profile: {fileID: 11400000, guid: 3f24d71f51f57da4f9bece5e6b0b8ce0, type: 2}
+  m_BakingSkyUniqueID: 1
 --- !u!1 &174787484
 GameObject:
   m_ObjectHideFlags: 0