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Description of problem:
With https://bugzilla.redhat.com/show_bug.cgi?id=1532675, we've update the way
how we render the output. However, there was an issue introduced, that caused
additional empty lines to sneak into the output.

Version-Release number of selected component (if applicable):


How reproducible:
90%

Steps to Reproduce:
1. run rex job running 'echo one; sleep 1; echo two; sleep 1; echo three'


Actual results:

Job output on host is shown as:
   1: one
   2:
   3: two
   4:
   5: three
   6:
   7: Exit status: 0

Expected results:

Job output looks like this:

   1: one
   2: two
   3: three
   4: Exit status: 0

Additional info:

Created redmine issue https://projects.theforeman.org/issues/25598 from this bug

Verified on Sat 6.5 snap 7 on using ansible and ssh command templates

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2019:1222