CAPAUT-471 Refactor error handling to avoid broken builds

gradle/build-mavenpublish.gradle

@@ -21,14 +21,13 @@ project.ext {
     mavenRepositoryUrl = ( project.hasProperty('MAVEN_PUBLISH_REPOSITORY_URL') ? MAVEN_PUBLISH_REPOSITORY_URL : null )
 }
 
-// Fail fast
-if ( mavenAccessToken == null || mavenRepositoryUrl == null ) {
-    throw new GradleScriptException("Missing required properties: MAVEN_PUBLISH_ACCESS_TOKEN and MAVEN_PUBLISH_REPOSITORY_URL", null)
-}
-
 // Apply plugins
 apply plugin: 'maven-publish'
 
+if ( ext.mavenAccessToken == null || ext.mavenRepositoryUrl == null ) {
+    logger.error("ERROR: Maven publish not possible! Missing required properties: MAVEN_PUBLISH_ACCESS_TOKEN and MAVEN_PUBLISH_REPOSITORY_URL")
+}
+else {
     // Configure maven publish
     publishing {
         publications {
@@ -52,3 +51,4 @@ publishing {
             }
         }
     }
+}