Azure pipeline task CondaEnvironment@1 has been deprecated. (#2309)

* Replace CondaEnvironment@1 azure task with UsePythonVersion@0.
* Remove unnecessary steps.

---------

Signed-off-by: Jay Zhang <jiz@microsoft.com>

Author: fatcat-z

ci_build/azure_pipelines/templates/combine_test_coverage.yml

@@ -20,12 +20,10 @@ stages:
         artifactName: '${{ parameters.artifact_name }}'
         downloadPath: $(System.DefaultWorkingDirectory)
 
-    - task: CondaEnvironment@1
+    - task: UsePythonVersion@0
       inputs:
-        createCustomEnvironment: 'true'
-        environmentName: 'tf2onnx'
-        packageSpecs: 'python=3.7'
-        updateConda: 'false'
+        versionSpec: '3.7'
+        architecture: 'x64'
 
     - bash: |
         pip install -U coverage

ci_build/azure_pipelines/templates/job_generator.yml

@@ -78,22 +78,10 @@ jobs:
     - bash: env
       displayName: 'Display Environment Variables'
 
-# TODO: ordinary python is preferred but built-in python3.6 does not have libpython3.6m.so, onnxruntime will fail with
-# Error: 'libpython3.6m.so.1.0: cannot open shared object file: No such file or directory'
-# so have to use conda here, may switch back to UsePythonVersion when the issue is fixed.
-#    - task: UsePythonVersion@0
-#      inputs:
-#        versionSpec: '$(CI_PYTHON_VERSION)'
-#        architecture: 'x64'
-
-# TODO: Conda Environment task is deprecating, move to raw python after issue above is fixed.
-# https://github.com/Microsoft/azure-pipelines-tasks/pull/9573
-    - task: CondaEnvironment@1
+    - task: UsePythonVersion@0
       inputs:
-        createCustomEnvironment: 'true'
-        environmentName: 'tf2onnx'
-        packageSpecs: 'python=$(CI_PYTHON_VERSION)'
-        updateConda: 'false'
+        versionSpec: '$(CI_PYTHON_VERSION)'
+        architecture: 'x64'
 
     - ${{ if eq(parameters.run_setup, 'True') }}:
       - template: 'setup.yml'

ci_build/azure_pipelines/templates/keras2onnx_application_tests.yml

@@ -9,11 +9,10 @@ steps:
   - script: sudo install -d -m 0777 /home/vsts/.conda/envs
     displayName: Fix Conda permissions
 
-  - task: CondaEnvironment@1
+  - task: UsePythonVersion@0
     inputs:
-      createCustomEnvironment: true
-      environmentName: 'py$(python.version)'
-      packageSpecs: 'python=$(python.version)'
+      versionSpec: '$(python.version)'
+      architecture: 'x64'
 
   - script: |
       python -m pip install --upgrade pip
@@ -80,11 +79,7 @@ steps:
   - powershell: Write-Host "##vso[task.prependpath]$env:CONDA\Scripts"
     displayName: Add conda to PATH
 
-  - script: conda create --yes --quiet --name py$(python.version) -c conda-forge python=$(python.version) numpy protobuf~=3.20
-    displayName: Create Anaconda environment
-
   - script: |
-      call activate py$(python.version)
       python -m pip install --upgrade pip numpy
       echo Test numpy installation... && python -c "import numpy"
       pip install onnxconverter-common
@@ -119,7 +114,6 @@ steps:
     displayName: 'Install dependencies'
 
   - script: |
-      call activate py$(python.version)
       pip install -e .
       echo Test onnxruntime installation... && python -c "import onnxruntime"
       pytest tests/keras2onnx_unit_tests --doctest-modules --junitxml=junit/test-results.xml

ci_build/azure_pipelines/templates/keras2onnx_unit_test.yml

@@ -9,11 +9,10 @@ steps:
   - script: sudo install -d -m 0777 /home/vsts/.conda/envs
     displayName: Fix Conda permissions
 
-  - task: CondaEnvironment@1
+  - task: UsePythonVersion@0
     inputs:
-      createCustomEnvironment: true
-      environmentName: 'py$(python.version)'
-      packageSpecs: 'python=$(python.version)'
+      versionSpec: '$(python.version)'
+      architecture: 'x64'
 
   - script: |
       python -m pip install --upgrade pip
@@ -63,14 +62,7 @@ steps:
       versionSpec: '$(python.version)'
       architecture: 'x64'
 
-  - powershell: Write-Host "##vso[task.prependpath]$env:CONDA\Scripts"
-    displayName: Add conda to PATH
-
-  - script: conda create --yes --quiet --name py$(python.version) -c conda-forge python=$(python.version) numpy protobuf~=3.20
-    displayName: Create Anaconda environment
-
   - script: |
-      call activate py$(python.version)
       python -m pip install --upgrade pip numpy
       echo Test numpy installation... && python -c "import numpy"
       pip install onnxconverter-common
@@ -91,7 +83,6 @@ steps:
     displayName: 'Install dependencies'
 
   - script: |
-      call activate py$(python.version)
       pip install -e .
       echo Test onnxruntime installation... && python -c "import onnxruntime"
       python -c "import onnxconverter_common"