Executing katello-tracer-upload command shows UnicodeWarning: decode() called on unicode string warnings.

Issue

• Running katello-tracer-upload command shows following warning messages on client system when trying to upload the tracer profile:

  # katello-tracer-upload 
  Updating Subscription Management repositories.
  /usr/lib/python3.6/site-packages/tracer/packageManagers/rpm.py:201: UnicodeWarning: decode() called on unicode string, see https://bugzilla.redhat.com/show_bug.cgi?id=1693751
  package.description = hdr[rpm.RPMTAG_SUMMARY].decode()
  
  /usr/lib/python3.6/site-packages/tracer/packageManagers/rpm.py:202: UnicodeWarning: decode() called on unicode string, see https://bugzilla.redhat.com/show_bug.cgi?id=1693751
  package.category = hdr[rpm.RPMTAG_GROUP].decode()
  
  /usr/lib/python3.6/site-packages/tracer/packageManagers/rpm.py:208: UnicodeWarning: decode() called on unicode string, see https://bugzilla.redhat.com/show_bug.cgi?id=1693751
  package.version = hdr[rpm.RPMTAG_VERSION].decode()
  
  /usr/lib/python3.6/site-packages/tracer/packageManagers/rpm.py:209: UnicodeWarning: decode() called on unicode string, see https://bugzilla.redhat.com/show_bug.cgi?id=1693751
  package.release = hdr[rpm.RPMTAG_RELEASE].decode()