[bitnami/gradle] Add overwrite option for gradle init (#69275)

Signed-off-by: David Gomez <dgomezleon@vmware.com>

.vib/gradle/goss/gradle.yaml

@@ -7,6 +7,6 @@ command:
     exec: gradle -v | grep "Gradle $(echo $APP_VERSION | sed -E 's|([0-9]+\.[0-9]+)\.0$|\1|g')"
     exit-status: 0
   create-sample-project:
-    exec: echo | gradle init && gradle build
+    exec: echo | gradle init --overwrite && gradle build
     exit-status: 0
     timeout: 180000