Optional properties if not found produce too many logs.

Optional properties could be absent and that's ok, but the log level is set to WARN level, in result we see warning logs each time an optional property is not resolved: https://community.opengroup.org/osdu/platform/system/lib/core/os-core-common/-/blob/master/src/main/java/org/opengroup/osdu/core/common/partition/PartitionPropertyResolver.java?ref_type=heads#L63

We need to lower it to the debug level.