Raise time2wait in publish thread

[adybbroe]

• Closes #xxxx
• Tests added
• Tests passed: Passes pytest
• Passes flake8 pytroll-pps-runner
• Fully documented

[codecov]

Codecov Report

Merging #24 (4e3f4eb) into master (c734de3) will increase coverage by 0.10%.
The diff coverage is 33.33%.

@@            Coverage Diff             @@
##           master      #24      +/-   ##
==========================================
+ Coverage   29.71%   29.82%   +0.10%     
==========================================
  Files          11       12       +1     
  Lines        1740     1747       +7     
==========================================
+ Hits          517      521       +4     
- Misses       1223     1226       +3     

Flag	Coverage Δ
unittests	29.82% <33.33%> (+0.10%)	⬆️

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Impacted Files	Coverage Δ
nwcsafpps_runner/pps_posttroll_hook.py	79.14% <33.33%> (-0.49%)	⬇️
nwcsafpps_runner/__init__.py	66.66% <0.00%> (ø)

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[adybbroe]

Okay, I am merging this now, okay @mraspaud @pnuu and @TAlonglong ?

[TAlonglong]

LGTM