Add TENSOR_QUANT8_ASYMM_SIGNED support for more ops

Updated:
  CONCATENATION
  REDUCE_MIN
  REDUCE_MAX
  STRIDED_SLICE
  RESHAPE
  SQUEEZE
  MEAN

Bug: 143934554
Bug: 143935314
Bug: 143934726
Bug: 143934771
Bug: 143934557
Bug: 143934306
Bug: 143935140
Test: quantization coupling tests in CTS and VTS
Change-Id: Ie73d070fd6f0a27185c1f26561710635b6e03b26