Remove the pid file if there is no process for the pid or the process name does not match. (backport #405)

[mergify[bot]]

This is an automatic backport of pull request #405 done by Mergify.

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[codecov[bot]]

Codecov Report

Merging #407 (8423a3c) into ospd-21.04 (a084454) will decrease coverage by 0.33%. The diff coverage is 6.66%.

@@              Coverage Diff               @@
##           ospd-21.04     #407      +/-   ##
==============================================
- Coverage       74.93%   74.60%   -0.34%     
==============================================
  Files              23       23              
  Lines            2633     2646      +13     
==============================================
+ Hits             1973     1974       +1     
- Misses            660      672      +12     

Impacted Files	Coverage Δ
ospd/misc.py	44.15% <6.66%> (-7.41%)	:arrow_down:

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