reportopts: A: put "Pp" in front

[blueyed]

No changelog, followup to #5068.

Have not really checked if this is sane yet, but "P" means to provide the output of the passed tests, and "p" to include it in the summary - where it should come first also then.

[codecov]

Codecov Report

Merging #5119 into features will increase coverage by 0.94%.
The diff coverage is 100%.

@@             Coverage Diff              @@
##           features    #5119      +/-   ##
============================================
+ Coverage     91.33%   92.27%   +0.94%     
============================================
  Files           115      115              
  Lines         26165    26165              
  Branches       2578     2578              
============================================
+ Hits          23897    24144     +247     
+ Misses         1940     1695     -245     
+ Partials        328      326       -2

Impacted Files	Coverage Δ
src/_pytest/terminal.py	89.81% <100%> (ø)	⬆️
testing/test_terminal.py	78.38% <100%> (-3.89%)	⬇️
testing/test_tmpdir.py	75.8% <0%> (-23.12%)	⬇️
testing/python/fixtures.py	89.91% <0%> (-8.6%)	⬇️
testing/python/integration.py	86.42% <0%> (-5%)	⬇️
src/_pytest/tmpdir.py	96.55% <0%> (-3.45%)	⬇️
testing/python/metafunc.py	92.27% <0%> (-2.95%)	⬇️
src/_pytest/fixtures.py	97.79% <0%> (-0.14%)	⬇️
src/_pytest/python.py	93.09% <0%> (ø)	⬆️
... and 9 more

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[asottile]

change looks fine, make sure it works well before shipping 👍

[nicoddemus]

Ping @blueyed to solve the conflicts