insights-client command give traceback if no yum repodata files exists on RHEL 7.x.

Issue

• when no yum repodata file exists on the RHEL 7.x system, insights-client command gives below traceback Full traceback

  2022-01-26 12:33:00,360  WARNING insights.core.dr Traceback (most recent call last):
    File "/var/lib/insights/last_stable.egg/insights/core/dr.py", line 967, in run
      result = DELEGATES[component].process(broker)
    File "/var/lib/insights/last_stable.egg/insights/core/dr.py", line 686, in process
      return self.invoke(broker)
    File "/var/lib/insights/last_stable.egg/insights/core/plugins.py", line 90, in invoke
      return self.component(broker)
    File "/var/lib/insights/last_stable.egg/insights/specs/datasources/yum_updates.py", line 135, in yum_updates
      umgr.load()
    File "/var/lib/insights/last_stable.egg/insights/specs/datasources/yum_updates.py", line 54, in load
      self.base.doSackSetup()
    File "/usr/lib/python2.7/site-packages/yum/__init__.py", line 741, in doSackSetup
      return self._getSacks(archlist=archlist, thisrepo=thisrepo)
    File "/usr/lib/python2.7/site-packages/yum/__init__.py", line 778, in _getSacks
      self.repos.populateSack(which=repos)
    File "/usr/lib/python2.7/site-packages/yum/repos.py", line 386, in populateSack
      sack.populate(repo, mdtype, callback, cacheonly)
    File "/usr/lib/python2.7/site-packages/yum/yumRepo.py", line 227, in populate
      if self._check_db_version(repo, mydbtype):
    File "/usr/lib/python2.7/site-packages/yum/yumRepo.py", line 319, in _check_db_version
      return repo._check_db_version(mdtype)
    File "/usr/lib/python2.7/site-packages/yum/yumRepo.py", line 1515, in _check_db_version
      repoXML = self.repoXML
    File "/usr/lib/python2.7/site-packages/yum/yumRepo.py", line 1701, in <lambda>
      repoXML = property(fget=lambda self: self._getRepoXML(),
    File "/usr/lib/python2.7/site-packages/yum/yumRepo.py", line 1697, in _getRepoXML
      self._loadRepoXML(text=self.ui_id)
    File "/usr/lib/python2.7/site-packages/yum/yumRepo.py", line 1688, in _loadRepoXML
      return self._groupLoadRepoXML(text, self._mdpolicy2mdtypes())
    File "/usr/lib/python2.7/site-packages/yum/yumRepo.py", line 1662, in _groupLoadRepoXML
      if self._commonLoadRepoXML(text):
    File "/usr/lib/python2.7/site-packages/yum/yumRepo.py", line 1472, in _commonLoadRepoXML
      if self._cachingRepoXML(local):
    File "/usr/lib/python2.7/site-packages/yum/yumRepo.py", line 1237, in _cachingRepoXML
      raise Errors.RepoError, 'Cannot find repomd.xml file for %s' % self.ui_id
  RepoError: Cannot find repomd.xml file for Hilti_HOICI_HOICI-2_1_99-ci