Update default VAO attrib divisor tests.

- Expect vertexAttribDivisor on ES31 with default VAO to not generate
  a error, i.e. expect vertexAttribDivisor in ES31 to be compatible with
  ES30.

Bug: 20154392
Change-Id: I2c009518f5f0686b269f3d2a33ea8a19c3d02470
2 files changed