Fetch changes from pr-id when triggering from prow

Signed-off-by: Mohammed Boukhalfa <mohammed.boukhalfa@est.tech>

jenkins/scripts/files/run_integration_tests.sh

@@ -122,6 +122,8 @@ if [[ "${UPDATED_REPO}" != *"${REPO_ORG}/${REPO_NAME}"* ]] ||
     git config user.name "Test"
     git remote add test "${UPDATED_REPO}"
     git fetch test
+    # if triggered from prow we cannot get the ghprbAuthorRepoGitUrl then we pull the PR
+    git fetch origin pull/${PR_ID:-0}/head:"${UPDATED_BRANCH}-branch" || true
     # Merging the PR with the target branch
     git merge "${UPDATED_BRANCH}" || exit
 fi

jenkins/scripts/integration_test.sh

@@ -30,6 +30,7 @@ REPO_ORG="${REPO_ORG:-metal3-io}"
 REPO_NAME="${REPO_NAME:-metal3-dev-env}"
 UPDATED_REPO="${UPDATED_REPO:-https://github.com/${REPO_ORG}/${REPO_NAME}.git}"
 UPDATED_BRANCH="${UPDATED_BRANCH:-main}"
+PR_ID="${PR_ID}"
 CAPI_VERSION="${CAPI_VERSION:-v1beta1}"
 CAPM3_VERSION="${CAPM3_VERSION:-v1beta1}"
 CAPM3RELEASEBRANCH="${CAPM3RELEASEBRANCH:-main}"
@@ -140,6 +141,7 @@ REPO_NAME="${REPO_NAME}"
 REPO_BRANCH="${REPO_BRANCH}"
 UPDATED_REPO="${UPDATED_REPO}"
 UPDATED_BRANCH="${UPDATED_BRANCH}"
+PR_ID="${PR_ID}"
 CAPI_VERSION="${CAPI_VERSION}"
 CAPM3_VERSION="${CAPM3_VERSION}"
 CAPM3RELEASEBRANCH="${CAPM3RELEASEBRANCH}"