Increase timeout for promote script

Increase the timeout used when checking if artifacts have landed in
Bintray from 20m to 40m. Also added some additional protection against
the curl command failing.

Closes spring-projectsgh-16443

ci/scripts/promote.sh

@@ -45,20 +45,25 @@ if [[ $RELEASE_TYPE = "RELEASE" ]]; then
 		POST "${ARTIFACTORY_SERVER}/api/build/distribute/${buildName}/${buildNumber}" > /dev/null || { echo "Failed to distribute" >&2; exit 1; }
 
 	echo "Waiting for artifacts to be published"
-	ARTIFACTS_PUBLISHED=false
-	WAIT_TIME=10
-	COUNTER=0
-	while [ $ARTIFACTS_PUBLISHED == "false" ] && [ $COUNTER -lt 120 ]; do
-		result=$( curl -s https://api.bintray.com/packages/"${BINTRAY_SUBJECT}"/"${BINTRAY_REPO}"/"${groupId}" )
-		versions=$( echo "$result" | jq -r '.versions' )
-		exists=$( echo "$versions" | grep "$version" -o || true )
-		if [ "$exists" = "$version" ]; then
-			ARTIFACTS_PUBLISHED=true
+
+	WAIT_TIME=20
+	WAIT_ATTEMPTS=120
+
+	artifacts_published=false
+	retry_counter=0
+	while [ $artifacts_published == "false" ] && [ $retry_counter -lt WAIT_ATTEMPTS ]; do
+		result=$( curl -s -f -u ${BINTRAY_USERNAME}:${BINTRAY_API_KEY} https://api.bintray.com/packages/"${BINTRAY_SUBJECT}"/"${BINTRAY_REPO}"/"${groupId}" )
+		if [ $? -eq 0 ]; then
+			versions=$( echo "$result" | jq -r '.versions' )
+			exists=$( echo "$versions" | grep "$version" -o || true )
+			if [ "$exists" = "$version" ]; then
+				artifacts_published=true
+			fi
 		fi
-		COUNTER=$(( COUNTER + 1 ))
+		retry_counter=$(( retry_counter + 1 ))
 		sleep $WAIT_TIME
 	done
-	if [[ $ARTIFACTS_PUBLISHED = "false" ]]; then
+	if [[ $artifacts_published = "false" ]]; then
 		echo "Failed to publish"
 		exit 1
 	else