Add dummy stop_scan method to be implemented in the wrapper.

[jjnicola]

No description provided.

[codecov]

Codecov Report

Merging #24 into master will increase coverage by 3.32%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master      #24      +/-   ##
==========================================
+ Coverage   55.72%   59.04%   +3.32%     
==========================================
  Files           4        4              
  Lines        1048     1050       +2     
==========================================
+ Hits          584      620      +36     
+ Misses        464      430      -34

Impacted Files	Coverage Δ
ospd/ospd.py	64.63% <100%> (+2.92%)	⬆️
ospd/misc.py	54.18% <0%> (+4.43%)	⬆️

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[janowagner]

The change as such is OK.
But I recommend to add a test in tests/testScanAndResult.py calling the command <stop_scan ... >.

[janowagner]

The codacy issue not relevant to me because it
is internal tests. But in general we should make XML parsing secure.