[PATCH v11 01/17] CI: make Python version configurable

["Oliver Steffen" <osteffen@redhat.com>]

Add a new parameter "usePythonVersion" to the CI job templates.
This makes it possible to specify the version of Python to use.
The default value is '', in which case Python will not be downloaded
at runtime and the one provided by the VM/container image will be used.

Additionally, add a template .azurepipelines/templates/defaults.yml,
from which the default Pyhton version string can be obtained.

Signed-off-by: Oliver Steffen <osteffen@redhat.com>
Reviewed-by: Michael Kubacki <michael.kubacki@microsoft.com>
---
 .azurepipelines/Ubuntu-GCC5.yml                       |  9 +++++----
 .azurepipelines/Windows-VS2019.yml                    |  4 ++++
 .azurepipelines/templates/defaults.yml                | 11 +++++++++++
 .../templates/platform-build-run-steps.yml            |  6 +++++-
 .azurepipelines/templates/pr-gate-build-job.yml       |  2 ++
 .azurepipelines/templates/pr-gate-steps.yml           |  6 ++++--
 6 files changed, 31 insertions(+), 7 deletions(-)
 create mode 100644 .azurepipelines/templates/defaults.yml

diff --git a/.azurepipelines/Ubuntu-GCC5.yml b/.azurepipelines/Ubuntu-GCC5.yml
index f83951eeaf86..4ed6cb601b8e 100644
--- a/.azurepipelines/Ubuntu-GCC5.yml
+++ b/.azurepipelines/Ubuntu-GCC5.yml
@@ -13,13 +13,14 @@ pr:
 - master
 - stable/*
 
+variables:
+  - template: templates/defaults.yml
+
 jobs:
 - template: templates/pr-gate-build-job.yml
   parameters:
     tool_chain_tag: 'GCC5'
     vm_image: 'ubuntu-latest'
     arch_list: "IA32,X64,ARM,AARCH64,RISCV64,LOONGARCH64"
-    extra_install_step:
-    - bash: sudo apt-get install -y lcov
-      displayName: Install Code Coverage Tools
-      condition: and(gt(variables.pkg_count, 0), succeeded())
+    usePythonVersion: ${{ variables.default_python_version }}
+
diff --git a/.azurepipelines/Windows-VS2019.yml b/.azurepipelines/Windows-VS2019.yml
index c07e5bb43424..58bb98d42b28 100644
--- a/.azurepipelines/Windows-VS2019.yml
+++ b/.azurepipelines/Windows-VS2019.yml
@@ -12,12 +12,16 @@ pr:
 - master
 - stable/*
 
+variables:
+  - template: templates/defaults.yml
+
 jobs:
 - template: templates/pr-gate-build-job.yml
   parameters:
     tool_chain_tag: 'VS2019'
     vm_image: 'windows-2019'
     arch_list: "IA32,X64"
+    usePythonVersion: ${{ variables.default_python_version }}
     extra_install_step:
     - powershell: choco install opencppcoverage; Write-Host "##vso[task.prependpath]C:\Program Files\OpenCppCoverage"
       displayName: Install Code Coverage Tool
diff --git a/.azurepipelines/templates/defaults.yml b/.azurepipelines/templates/defaults.yml
new file mode 100644
index 000000000000..b4909448bdea
--- /dev/null
+++ b/.azurepipelines/templates/defaults.yml
@@ -0,0 +1,11 @@
+## @file
+# File templates/default.yml
+#
+# template file containing common default values
+#
+# Copyright (c) Red Hat, Inc.
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+##
+
+variables:
+  default_python_version: ">=3.10.6"
diff --git a/.azurepipelines/templates/platform-build-run-steps.yml b/.azurepipelines/templates/platform-build-run-steps.yml
index 40a31a509fc5..8803d80cf51c 100644
--- a/.azurepipelines/templates/platform-build-run-steps.yml
+++ b/.azurepipelines/templates/platform-build-run-steps.yml
@@ -34,6 +34,9 @@ parameters:
 - name: extra_install_step
   type: stepList
   default: []
+- name: usePythonVersion
+  type: string
+  default: ''
 
 steps:
 - checkout: self
@@ -42,8 +45,9 @@ steps:
 
 - task: UsePythonVersion@0
   inputs:
-    versionSpec: ">=3.10.6"
+    versionSpec: ${{ parameters.usePythonVersion }}
     architecture: "x64"
+  condition: ne('${{ parameters.usePythonVersion }}', '')
 
 - script: pip install -r pip-requirements.txt --upgrade
   displayName: 'Install/Upgrade pip modules'
diff --git a/.azurepipelines/templates/pr-gate-build-job.yml b/.azurepipelines/templates/pr-gate-build-job.yml
index fff61a3193b0..b8573b90da1c 100644
--- a/.azurepipelines/templates/pr-gate-build-job.yml
+++ b/.azurepipelines/templates/pr-gate-build-job.yml
@@ -13,6 +13,7 @@ parameters:
   vm_image: ''
   arch_list: ''
   extra_install_step: []
+  usePythonVersion: ''
 
 # Build step
 jobs:
@@ -78,6 +79,7 @@ jobs:
       build_pkgs: $(Build.Pkgs)
       build_targets: $(Build.Targets)
       build_archs: ${{ parameters.arch_list }}
+      usePythonVersion: ${{ parameters.usePythonVersion }}
       extra_install_step: ${{ parameters.extra_install_step }}
 
 - job: Build_${{ parameters.tool_chain_tag }}_TARGET_CODE_COVERAGE
diff --git a/.azurepipelines/templates/pr-gate-steps.yml b/.azurepipelines/templates/pr-gate-steps.yml
index 080f60aea6ab..ebc1e86c37d4 100644
--- a/.azurepipelines/templates/pr-gate-steps.yml
+++ b/.azurepipelines/templates/pr-gate-steps.yml
@@ -12,6 +12,7 @@ parameters:
   build_pkgs: ''
   build_targets: ''
   build_archs: ''
+  usePythonVersion: ''
   extra_install_step: []
 
 steps:
@@ -21,8 +22,9 @@ steps:
 
 - task: UsePythonVersion@0
   inputs:
-    versionSpec: '>=3.10.6'
-    architecture: 'x64'
+    versionSpec: ${{ parameters.usePythonVersion }}
+    architecture: "x64"
+  condition: ne('${{ parameters.usePythonVersion }}', '')
 
 - script: pip install -r pip-requirements.txt --upgrade
   displayName: 'Install/Upgrade pip modules'
-- 
2.39.0