Realign the LTC test geometry

Assets/TestScenes/HDTest/HDRenderLoopTest.unity

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-  m_LocalPosition: {x: -5, y: 0, z: 4.8}
+  m_LocalPosition: {x: -5, y: 0, z: 4.9}
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-  m_LocalPosition: {x: 0, y: 0, z: 7}
+  m_LocalPosition: {x: 0, y: 0, z: 6.9}
   m_LocalScale: {x: 2, y: 10.000004, z: 1.0000005}
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-  m_LocalPosition: {x: 5, y: 0, z: 8}
+  m_LocalPosition: {x: 5, y: 0, z: 7.9}
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