* Add gru qat int8 test

* Change place of model downloading

* Update paddle/fluid/inference/tests/api/CMakeLists.txt
Co-authored-by: NSławomir Siwek <slawomir.siwek@intel.com>

* Correct flags names and add description

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Co-authored-by: NSławomir Siwek <slawomir.siwek@intel.com>

* Add mobilenetv3_large performance test

* Disable the BF16 test if the device does not support BF16 computations

* Change test timeout

* add ut for comparing FP32 and QAT INT8

* add save qat transformed model python script
test=develop

* updated

* added missing file

* add "with_label"
test=develop

* performance benchmark as unit test
test=develop

* change names of unnecessary thing

* Change CMakeList.txt for model downloading and UT
test=develop

* change names of functions and params for more readable code
test=develop

* Change PADDLE_ENFORCE messages
test=develop

* fix indent problems
test=develop

* indent problems
test=develop

* some fixes for int8 mobilenet_ssd tester
test=develop

* change wrong data file name
test=develop

* change test images bin file from 200 images to 100 images

* change directory existence to file existence during downloading
test=develop

* reuse download_data
test=develop

* run full dataset when iterations=0
test=develop

* fix issue 18111;test=develop

* fix timer;test=develop

* refine code;test=develop

test=develop

test=develop

test=develop