Switch from hardcoded "https" protocol (#4990)

Co-authored-by: Raghuveer Raavi <raghuveer.raavi@ibm.com>

Author: Raghuveer Raavi

core/routemgmt/common/apigw-utils.js

@@ -600,12 +600,13 @@ function getCaseOperationIdx(caseArr, operationId) {
 // Returns:
 //   string               - web-action URL
 function makeWebActionBackendUrl(endpointAction, endpointResponseType, isTargetUrl = false) {
+  protocol = getProtocolFromActionUrl(endpointAction.backendUrl);
   host = getHostFromActionUrl(endpointAction.backendUrl);
   ns = endpointAction.namespace;
   pkg = getPackageNameFromFqActionName(endpointAction.name) || 'default';
   name = getActionNameFromFqActionName(endpointAction.name);
   reqPath = isTargetUrl && endpointResponseType === 'http' ? "$(request.path)" : "";
-  return 'https://' + host + '/api/v1/web/' + ns + '/' + pkg + '/' + name + '.' + endpointResponseType + reqPath;
+  return protocol + '://' + host + '/api/v1/web/' + ns + '/' + pkg + '/' + name + '.' + endpointResponseType + reqPath;
 }
 
 /*
@@ -775,6 +776,14 @@ function getHostFromActionUrl(actionUrl) {
   return parseActionUrl(actionUrl)[2];
 }
 
+/*
+ * https://172.17.0.1/api/v1/namespaces/whisk.system/actions/getaction
+ * would return https
+ */
+function getProtocolFromActionUrl(actionUrl) {
+  return parseActionUrl(actionUrl)[1];
+}
+
 /*
  * Parses an openwhisk action name into its various components
  * Parameters