Drop pytest-services to 1.3.1, 2.2.0 has a bug for our use of file_lock

[mshriver]

pytest-dev/pytest-services#42 should resolve it, if accepted.

I missed this in the update to 2.2.0, committed yesterday.

[codecov]

Codecov Report

Merging #8105 into master will decrease coverage by 0.38%.
The diff coverage is 27.58%.

@@            Coverage Diff             @@
##           master    #8105      +/-   ##
==========================================
- Coverage   58.56%   58.18%   -0.39%     
==========================================
  Files          74       75       +1     
  Lines        5795     6089     +294     
==========================================
+ Hits         3394     3543     +149     
- Misses       2401     2546     +145     

Impacted Files	Coverage Δ
robottelo/cli/factory.py	25.30% <ø> (ø)
robottelo/report_portal/portal.py	25.68% <ø> (+2.10%)	⬆️
robottelo/hosts.py	22.29% <22.29%> (ø)
robottelo/rhsso_utils.py	34.54% <23.07%> (-3.55%)	⬇️
robottelo/config/base.py	62.91% <61.53%> (+0.29%)	⬆️
robottelo/cli/ldapauthsource.py	100.00% <100.00%> (ø)
robottelo/constants/__init__.py	100.00% <100.00%> (ø)
robottelo/decorators/__init__.py	79.01% <0.00%> (-0.48%)	⬇️
robottelo/cli/repository.py	100.00% <0.00%> (ø)
... and 23 more

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