associate the placeholder property only there are placeholders

[ERROR] Failed to execute goal com.xebialabs.deployit:maven-deployit-plugin:3.9.2:deploy (deploy-id) on project qsavDAR: Execution deploy-id of goal com.xebialabs.deployit:maven-deployit-plugin:3.9.2:deploy failed: Type wls.DataSource has no property placeholders -> [Help 1]