Update metadata.path to metadata.monit_hdfs_path while getting SSB metrics

[haozturk]

Impact of the new feature
SSB metrics

Is your feature request related to a problem? Please describe.
In the last CompOps meeting, Stephan announced that this is a required change in order to continue using SSB metrics.

Describe the solution you'd like
Update metadata.path to metadata.monit_hdfs_path in this function [1]

[1] https://github.com/CMSCompOps/WmAgentScripts/blob/master/utils.py#L994

Describe alternatives you've considered
None

Additional context
None