Undo integration test skip

[pulkittomar]

TestModelSerialization was skipped due to Linux CI build failures. The Linux CI build were disabled so these tests didn't execute before the checkin.

After merging the latest master, I see the TestModelSerialization test no longer fails.

The test failed consistently for one of the nightly builds. There were some change in C++ api which update graph optimization level enums. After taking all the latest changes in master, I see that the test passed. I believe the tests failed because API was in an inconsistent state.

Test run:
1_Linux_CI_Dev (1).txt:113480:2019-09-26T00:42:45.4241477Z 2: [ OK ] InferenceSessionTests.NoTimeout (1 ms)
1_Linux_CI_Dev (1).txt:113481:2019-09-26T00:42:45.4241900Z 2: [ RUN ] InferenceSessionTests.DisableCPUArena
1_Linux_CI_Dev (1).txt:113482:2019-09-26T00:42:45.4252498Z 2: [ OK ] InferenceSessionTests.DisableCPUArena (1 ms)

1_Linux_CI_Dev (1).txt:113483:2019-09-26T00:42:45.4252926Z 2: [ RUN ] InferenceSessionTests.TestModelSerialization
1_Linux_CI_Dev (1).txt:113484:2019-09-26T00:42:45.4292801Z 2: 2019-09-26 00:42:45.428682970 [W:onnxruntime:InferenceSessionTests.TestModelSerialization, inference_session.cc:540 Initialize] Serializing Optimized ONNX model with Graph Optimization level greater than 2
is not supported.
1_Linux_CI_Dev (1).txt:113485:2019-09-26T00:42:45.4331794Z 2: [ OK ] InferenceSessionTests.TestModelSerialization (8 ms)
1_Linux_CI_Dev (1).txt:113486:2019-09-26T00:42:45.4332396Z 2: [ RUN ] InferenceSessionTests.ModelMetadata
1_Linux_CI_Dev (1).txt:113487:2019-09-26T00:42:45.4430817Z 2: weights size: 52 inputs.size(): 1 from session: 1
1_Linux_CI_Dev (1).txt:113488:2019-09-26T00:42:45.4442183Z 2: [ OK ] InferenceSessionTests.ModelMetadata (11 ms)
1_Linux_CI_Dev (1).txt:118147:2019-09-26T00:43:55.1921083Z 2: [ OK ] InferenceSessionTests.NoTimeout (7 ms)
1_Linux_CI_Dev (1).txt:118148:2019-09-26T00:43:55.1921572Z 2: [ RUN ] InferenceSessionTests.DisableCPUArena
1_Linux_CI_Dev (1).txt:118149:2019-09-26T00:43:55.1981113Z 2: [ OK ] InferenceSessionTests.DisableCPUArena (6 ms)
1_Linux_CI_Dev (1).txt:118150:2019-09-26T00:43:55.1981524Z 2: [ RUN ] InferenceSessionTests.TestModelSerialization
1_Linux_CI_Dev (1).txt:118151:2019-09-26T00:43:55.2077456Z 2: 2019-09-26 00:43:55.207010552 [W:onnxruntime:InferenceSessionTests.TestModelSerialization, inference_session.cc:540 Initialize] Serializing Optimized ONNX model with Graph Optimization level greater than 2
is not supported.
1_Linux_CI_Dev (1).txt:118152:2019-09-26T00:43:55.2361048Z 2: [ OK ] InferenceSessionTests.TestModelSerialization (38 ms)
1_Linux_CI_Dev (1).txt:118153:2019-09-26T00:43:55.2361493Z 2: [ RUN ] InferenceSessionTests.ModelMetadata
1_Linux_CI_Dev (1).txt:118154:2019-09-26T00:43:55.2528171Z 2: weights size: 52 inputs.size(): 1 from session: 1
1_Linux_CI_Dev (1).txt:118155:2019-09-26T00:43:55.2580029Z 2: [ OK ] InferenceSessionTests.ModelMetadata (22 ms)
Linux_CI_Dev\8_Command Line Script.txt:112574:2019-09-26T00:42:45.4241451Z 2: [ OK ] InferenceSessionTests.NoTimeout (1 ms)
Linux_CI_Dev\8_Command Line Script.txt:112575:2019-09-26T00:42:45.4241890Z 2: [ RUN ] InferenceSessionTests.DisableCPUArena
Linux_CI_Dev\8_Command Line Script.txt:112576:2019-09-26T00:42:45.4252471Z 2: [ OK ] InferenceSessionTests.DisableCPUArena (1 ms)
Linux_CI_Dev\8_Command Line Script.txt:112577:2019-09-26T00:42:45.4252917Z 2: [ RUN ] InferenceSessionTests.TestModelSerialization
Linux_CI_Dev\8_Command Line Script.txt:112578:2019-09-26T00:42:45.4292773Z 2: 2019-09-26 00:42:45.428682970 [W:onnxruntime:InferenceSessionTests.TestModelSerialization, inference_session.cc:540 Initialize] Serializing Optimized ONNX model with Graph Optimization
level greater than 2 is not supported.
Linux_CI_Dev\8_Command Line Script.txt:112579:2019-09-26T00:42:45.4331767Z 2: [ OK ] InferenceSessionTests.TestModelSerialization (8 ms)
Linux_CI_Dev\8_Command Line Script.txt:112580:2019-09-26T00:42:45.4332228Z 2: [ RUN ] InferenceSessionTests.ModelMetadata
Linux_CI_Dev\8_Command Line Script.txt:112581:2019-09-26T00:42:45.4430789Z 2: weights size: 52 inputs.size(): 1 from session: 1
Linux_CI_Dev\8_Command Line Script.txt:112582:2019-09-26T00:42:45.4442139Z 2: [ OK ] InferenceSessionTests.ModelMetadata (11 ms)
Linux_CI_Dev\8_Command Line Script.txt:117241:2019-09-26T00:43:55.1920856Z 2: [ OK ] InferenceSessionTests.NoTimeout (7 ms)
Linux_CI_Dev\8_Command Line Script.txt:117242:2019-09-26T00:43:55.1921563Z 2: [ RUN ] InferenceSessionTests.DisableCPUArena
Linux_CI_Dev\8_Command Line Script.txt:117243:2019-09-26T00:43:55.1981056Z 2: [ OK ] InferenceSessionTests.DisableCPUArena (6 ms)
Linux_CI_Dev\8_Command Line Script.txt:117244:2019-09-26T00:43:55.1981515Z 2: [ RUN ] InferenceSessionTests.TestModelSerialization
Linux_CI_Dev\8_Command Line Script.txt:117245:2019-09-26T00:43:55.2077428Z 2: 2019-09-26 00:43:55.207010552 [W:onnxruntime:InferenceSessionTests.TestModelSerialization, inference_session.cc:540 Initialize] Serializing Optimized ONNX model with Graph Optimization
level greater than 2 is not supported.
Linux_CI_Dev\8_Command Line Script.txt:117246:2019-09-26T00:43:55.2361019Z 2: [ OK ] InferenceSessionTests.TestModelSerialization (38 ms)
Linux_CI_Dev\8_Command Line Script.txt:117247:2019-09-26T00:43:55.2361482Z 2: [ RUN ] InferenceSessionTests.ModelMetadata
Linux_CI_Dev\8_Command Line Script.txt:117248:2019-09-26T00:43:55.2528140Z 2: weights size: 52 inputs.size(): 1 from session: 1
Linux_CI_Dev\8_Command Line Script.txt:117249:2019-09-26T00:43:55.2580003Z 2: [ OK ] InferenceSessionTests.ModelMetadata (22 ms)

This PR is attempting to address the CSharp api failures for those tests.

[shahasad]

Was the test actually fixed?

[shahasad]

/azp run

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[askhade]

/azp run

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[shahasad]

/azp run

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