Fix build failed due to script unable to find configmap (#1237)

test/test.sh

@@ -26,6 +26,7 @@ while true; do
 
     previous_build_id=$(kubectl --namespace default get configmap in-test --ignore-not-found -o=jsonpath='{.metadata.labels.travisID}')
 
+    if [[ ! -z ${previous_build_id} ]]; then
         build_state=$(curl -s -X GET https://api.travis-ci.org/build/${previous_build_id} \
         -H "Authorization: token ${TRAVIS_TOKEN}" \
         -H "Travis-API-Version: 3" | python -c "import sys,json; print json.load(sys.stdin)['state']")
@@ -36,6 +37,7 @@ while true; do
         if [[ ${TRAVIS_TOKEN} == ${previous_build_id} ]] || [[ $build_state != "started" ]]; then
             kubectl --namespace default delete configmap -l travisID=${previous_build_id}
         fi
+    fi
 
     created=$(kubectl --namespace default create configmap in-test|grep "created"||true)
     if [[ -z $created ]]; then