docs: def splunk_monitor(monitors):
      """Monitor a list of (path, sourcetype) pairs in splunk"""
      if not exists('/opt/splunkforwarder'):
          return
      if not env.get('splunk_monitors'):
          with hide('commands'):
              env['splunk_monitors'] = str(splunk('list monitor'))
      for path, sourcetype in monitors:
          if path not in env['splunk_monitors']:
              with hide('everything'):
                  run("touch '{path}'; true".format(path=path))
              splunk("add monitor '{path}' -sourcetype {st}".format(
                  path=path, st=sourcetype))
              env['splunk_monitors'] += '\n' + path