extract useful variables out to a shared context file

.github/workflows/templates/layout.yml.jinja

@@ -6,10 +6,6 @@
 <%- set prepare_workflow_salt_version_input = prepare_workflow_salt_version_input|default("") %>
 <%- set skip_test_coverage_check = skip_test_coverage_check|default("${{ github.event_name == 'pull_request' }}") %>
 <%- set skip_junit_reports_check = skip_junit_reports_check|default("${{ github.event_name == 'pull_request' }}") %>
-<%- set python_version_linux = "3.10.10" %>
-<%- set python_version_macos = "3.10.10" %>
-<%- set python_version_windows = "3.10.10" %>
-<%- set relenv_version = "0.10.1" %>
 <%- set gpg_key_id = "64CBBC8173D76B3F" %>
 <%- set prepare_actual_release = prepare_actual_release | default(False) %>
 <%- set release_branches = ["master", "3006.x"] %>

cicd/shared-context.yml

@@ -0,0 +1,4 @@
+python_version_linux: "3.10.10"
+python_version_macos: "3.10.10"
+python_version_windows: "3.10.10"
+relenv_version: "0.10.1"

tools/pre_commit.py

@@ -8,6 +8,7 @@ import logging
 import shutil
 from typing import TYPE_CHECKING, cast
 
+import yaml
 from jinja2 import Environment, FileSystemLoader
 from ptscripts import Context, command_group
 
@@ -115,6 +116,10 @@ def generate_workflows(ctx: Context):
             "prepare_workflow_needs": NeedsTracker(),
             "build_repo_needs": NeedsTracker(),
         }
+        shared_context_file = tools.utils.REPO_ROOT / "cicd" / "shared-context.yml"
+        shared_context = yaml.safe_load(shared_context_file.read_text())
+        for key, value in shared_context.items():
+            context[key] = value
         loaded_template = env.get_template(template_path.name)
         rendered_template = loaded_template.render(**context)
         workflow_path.write_text(rendered_template.rstrip() + "\n")