Fix for incorrectly matching a task in sub-project

This should address nebula-plugins#140.

src/main/groovy/nebula/test/functional/internal/toolingapi/BuildLauncherBackedGradleHandle.groovy

@@ -116,6 +116,6 @@ class BuildLauncherBackedGradleHandle implements GradleHandle {
     }
 
     private boolean containsOutput(String stdout, String taskName, String stateIdentifier) {
-        stdout.contains("$taskName $stateIdentifier".toString())
+        stdout.contains(" $taskName $stateIdentifier".toString())
     }
 }