For v2 target branches python 2.7 and 3.5 images are skipped (#13118)

Previously we skipped building 2.7 and 3.5 for master branch but
now we have also v2-0-test, so it is better to skip the
versions when branch is != v1-10-test (this is the only
DEFAULT_BRANCH - even in v1-10-stable builds v1-10-test is used
as DEFAULT_BRANCH is v1-10-test.

.github/workflows/build-images-workflow-run.yml

@@ -284,13 +284,12 @@ jobs:
             scripts/ci/libraries/_initialization.sh | \
             awk 'BEGIN{FS="="} {print $3}' | sed s'/["}]//g')
           echo "DEFAULT_CONSTRAINTS_BRANCH=${DEFAULT_CONSTRAINTS_BRANCH}" >> $GITHUB_ENV
-          if [[ \
-            ${DEFAULT_BRANCH} != "master" || \
-            ( ${PYTHON_MAJOR_MINOR_VERSION} != "2.7" && ${PYTHON_MAJOR_MINOR_VERSION} != "3.5" ) \
+          if [[ ${DEFAULT_BRANCH} != "v1-10-test" && \
+            ( ${PYTHON_MAJOR_MINOR_VERSION} == "2.7" || ${PYTHON_MAJOR_MINOR_VERSION} == "3.5" ) \
           ]]; then
-              echo "::set-output name=proceed::true"
-          else
               echo "::set-output name=proceed::false"
+          else
+              echo "::set-output name=proceed::true"
           fi
       - name: Initiate GitHub Checks for Building image
         uses: LouisBrunner/checks-action@9f02872da71b6f558c6a6f190f925dde5e4d8798  # v1.1.0