Update Python versions used to run network tests. (#74647)

.azure-pipelines/azure-pipelines.yml

@@ -227,10 +227,8 @@ stages:
           targets:
             - name: IOS Python
               test: ios/csr1000v/
-            - name: VyOS Python 2.7
-              test: vyos/1.1.8/2.7
-            - name: VyOS Python 3.6
-              test: vyos/1.1.8/3.6
+            - name: VyOS Python
+              test: vyos/1.1.8/
             - name: AWS Python 2.7
               test: aws/2.7
             - name: AWS Python 3.6

test/utils/shippable/incidental/network.sh

@@ -16,10 +16,8 @@ provider="${P:-default}"
 
 # python versions to test in order
 # all versions run full tests
-python_versions=(
-    2.7
-    3.6
-)
+IFS=' ' read -r -a python_versions <<< \
+    "$(PYTHONPATH="${PWD}/test/lib" python -c 'from ansible_test._internal import util; print(" ".join(util.CONTROLLER_PYTHON_VERSIONS))')"
 
 if [ "${python_version}" ]; then
     # limit tests to a single python version