Try to fix tests failures on master

[tleonhardt]

There are test failures on master related to plugin requirements for cmd2 version conflicting with cmd2 version.

[codecov]

Codecov Report

Merging #1114 (ba5d65a) into master (5605038) will decrease coverage by 0.03%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1114      +/-   ##
==========================================
- Coverage   98.51%   98.48%   -0.04%     
==========================================
  Files          20       22       +2     
  Lines        4714     4747      +33     
==========================================
+ Hits         4644     4675      +31     
- Misses         70       72       +2     

Impacted Files	Coverage Δ
plugins/template/cmd2_myplugin/myplugin.py	92.59% <0.00%> (ø)
plugins/template/cmd2_myplugin/__init__.py	100.00% <0.00%> (ø)

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