{id} in history storage filename

[plakrisenko]

At the moment, if MultiProcessEngine is used and HistoryOptions storage_file contains "{id}" it lead to an error.

It's a minor thing, but is inconvenient when switching between SingleCoreEngine and MultiProcessEngine

[codecov-commenter]

Codecov Report

Merging #1118 (629732c) into develop (160c2a8) will decrease coverage by 3.78%.
Report is 385 commits behind head on develop.
The diff coverage is 87.95%.

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@@             Coverage Diff             @@
##           develop    #1118      +/-   ##
===========================================
- Coverage    88.16%   84.39%   -3.78%     
===========================================
  Files           79      148      +69     
  Lines         5257    11642    +6385     
===========================================
+ Hits          4635     9825    +5190     
- Misses         622     1817    +1195     

Files	Coverage Δ
pypesto/C.py	100.00% <100.00%> (ø)
pypesto/__init__.py	100.00% <100.00%> (ø)
pypesto/engine/__init__.py	100.00% <100.00%> (ø)
pypesto/engine/multi_process.py	93.10% <100.00%> (+0.79%)	⬆️
pypesto/engine/multi_thread.py	100.00% <100.00%> (ø)
pypesto/engine/single_core.py	100.00% <100.00%> (ø)
pypesto/engine/task.py	100.00% <100.00%> (ø)
pypesto/ensemble/__init__.py	100.00% <100.00%> (ø)
pypesto/ensemble/task.py	100.00% <100.00%> (ø)
pypesto/hierarchical/__init__.py	100.00% <100.00%> (ø)
... and 138 more

[PaulJonasJost]

Looks good to me