Fixed first composite creation

Composite properties file creation was failing if properties directory
was not existent

Signed-off-by: kuzniarz <sebastian.kuzniarz@dieboldnixdorf.com>

org.eclipse.buildship.ui/src/main/java/org/eclipse/buildship/ui/internal/wizard/workspacecomposite/CompositeImportWizardController.java

@@ -211,7 +211,8 @@ public boolean performCreateComposite(IWizardContainer container, IWorkingSetMan
     		workingSet.setId(IGradleCompositeIDs.NATURE);
     		workingSetManager.addWorkingSet(workingSet);
 
-
+    		compositePreferenceFile.getParentFile().mkdir();
+    		compositePreferenceFile.createNewFile();
 			FileOutputStream out = new FileOutputStream(compositePreferenceFile.getAbsoluteFile());
 			Properties prop = getConfiguration().toCompositeProperties().toProperties();
 			prop.store(out, " ");