XD-1757 Resolve runtime module option values

- Fix ZooKeeperModuleMetdataRepository's findOne(String metadataPath)
   - Check if the module option value has property placeholder syntax and retrieve
the placeholder value from module metadata from ZK metadata data
For example, if the `log` module's name option has the value ${xd.stream.name} then
look for `xd.stream.name` in module metadata to resolve the module option `name`