fix(test): failures of test_eap_reports in some test env

[xiangce]

• the timezone update in compliance tests breaks the
  eap_reports tests which are time-sensitive

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Complete Description of Additions/Changes:

• in some test env, the eap_report test always fail as below:

FAILED insights/tests/datasources/test_eap_reports.py::test_eap_one_match_paths - AssertionError: assert 2 == 1
 +  where 2 = len(['/var/tmp/insights-runtimes/uploads/file_a.json', '/var/tmp/insights-runtimes/uploads/file_b.json'])
FAILED insights/tests/datasources/test_eap_reports.py::test_eap_zero_match_paths - assert <function eap_report_files at 0x7fa4499e7420> not in <insights.core.dr.Broker object at 0x7fa44962e910>

• it's because that the two tests are time-sensitive,
  however the change of "TZ" in compliance test breaks
  the timestamp of file creating in the eap_reports tests.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.17%. Comparing base (d7cff2e) to head (f26dc5d).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #4310   +/-   ##
=======================================
  Coverage   77.17%   77.17%           
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  Files         765      765           
  Lines       41753    41753           
  Branches     8815     8815           
=======================================
+ Hits        32221    32223    +2     
+ Misses       8464     8463    -1     
+ Partials     1068     1067    -1     

Flag	Coverage Δ
unittests	77.16% <ø> (+<0.01%)	⬆️

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[xiangce]

This is a tiny update of tests, let's merge it to avoid the local test failures first.