make building tests optional (on by default)

[apwojcik]

The PR from the series to enable MIGraphX on Windows.

[codecov]

Codecov Report

Merging #1887 (808a4f9) into develop (84a8f45) will not change coverage.
The diff coverage is n/a.

❗ Current head 808a4f9 differs from pull request most recent head 6f82413. Consider uploading reports for the commit 6f82413 to get more accurate results

@@           Coverage Diff            @@
##           develop    #1887   +/-   ##
========================================
  Coverage    91.44%   91.44%           
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  Files          419      419           
  Lines        15516    15516           
========================================
  Hits         14188    14188           
  Misses        1328     1328           

[migraphx-bot]

Test	Batch	Rate new 6f8241	Rate old 84a8f4	Diff	Compare
torchvision-resnet50	64	895.49	896.26	-0.09%	✅
torchvision-resnet50_fp16	64	5,313.32	5,309.71	0.07%	✅
torchvision-densenet121	32	1,126.07	1,126.51	-0.04%	✅
torchvision-densenet121_fp16	32	3,278.40	3,276.51	0.06%	✅
torchvision-inceptionv3	32	594.11	593.21	0.15%	✅
torchvision-inceptionv3_fp16	32	2,517.05	2,514.58	0.10%	✅
cadene-inceptionv4	16	329.04	329.95	-0.28%	✅
cadene-resnext64x4	16	393.76	396.36	-0.66%	✅
slim-mobilenet	64	7,137.72	7,134.15	0.05%	✅
slim-nasnetalarge	64	160.07	159.96	0.07%	✅
slim-resnet50v2	64	1,090.43	1,089.90	0.05%	✅
bert-mrpc-onnx	8	719.28	719.15	0.02%	✅
bert-mrpc-tf	1	372.42	371.96	0.12%	✅
pytorch-examples-wlang-gru	1	308.85	301.75	2.35%	✅
pytorch-examples-wlang-lstm	1	309.86	311.74	-0.60%	✅
torchvision-resnet50_1	1	91.58	91.98	-0.44%	✅
torchvision-inceptionv3_1	1	129.15	130.00	-0.65%	✅
cadene-dpn92_1	1	336.46	335.33	0.34%	✅
cadene-resnext101_1	1	236.87	236.90	-0.01%	✅
slim-vgg16_1	1	53.39	53.39	-0.00%	✅
slim-mobilenet_1	1	1,507.00	1,517.98	-0.72%	✅
slim-inceptionv4_1	1	101.54	101.30	0.24%	✅
onnx-taau-downsample	1	316.33	317.23	-0.29%	✅
dlrm-criteoterabyte	1	21.45	21.45	0.00%	✅
dlrm-criteoterabyte_fp16	1	39.94	39.97	-0.06%	✅
agentmodel	1	5,789.05	5,933.63	-2.44%	✅
unet_fp16	2	52.79	52.82	-0.05%	✅

This build is OK for merge ✅

[migraphx-bot]

    :white_check_mark:bert-mrpc-onnx: PASSED: MIGraphX meets tolerance

    :white_check_mark:bert-mrpc-tf: PASSED: MIGraphX meets tolerance

    :white_check_mark:pytorch-examples-wlang-gru: PASSED: MIGraphX meets tolerance

    :white_check_mark:pytorch-examples-wlang-lstm: PASSED: MIGraphX meets tolerance

    :white_check_mark:torchvision-resnet50_1: PASSED: MIGraphX meets tolerance

    :white_check_mark:torchvision-inceptionv3_1: PASSED: MIGraphX meets tolerance

🔴cadene-dpn92_1: FAILED: MIGraphX is not within tolerance - check verbose output

    :white_check_mark:cadene-resnext101_1: PASSED: MIGraphX meets tolerance

    :white_check_mark:slim-vgg16_1: PASSED: MIGraphX meets tolerance

    :white_check_mark:slim-mobilenet_1: PASSED: MIGraphX meets tolerance

    :white_check_mark:slim-inceptionv4_1: PASSED: MIGraphX meets tolerance

    :white_check_mark:dlrm-criteoterabyte: PASSED: MIGraphX meets tolerance

    :white_check_mark:agentmodel: PASSED: MIGraphX meets tolerance

    :white_check_mark:unet: PASSED: MIGraphX meets tolerance