Gridap 0.20 + Distributed

[JordiManyer]

These changes are the ones required to incorporate the changes in Gridap 0.20, specifically the pullback machinery, into GridapDistributed.

See gridap/GridapDistributed.jl#200

[codecov]

Codecov Report

❌ Patch coverage is 90.27778% with 7 lines in your changes missing coverage. Please review.
✅ Project coverage is 88.69%. Comparing base (a38b9a2) to head (451c939).
⚠️ Report is 8 commits behind head on master.

Files with missing lines	Patch %	Lines
src/FESpaces/CLagrangianFESpaces.jl	70.00%	3 Missing ⚠️
src/FESpaces/ConformingFESpaces.jl	62.50%	3 Missing ⚠️
src/FESpaces/FESpaceFactories.jl	96.42%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1258      +/-   ##
==========================================
+ Coverage   88.10%   88.69%   +0.59%     
==========================================
  Files         226      226              
  Lines       29238    29245       +7     
==========================================
+ Hits        25761    25940     +179     
+ Misses       3477     3305     -172     

Flag	Coverage Δ
drivers	39.85% <80.55%> (+39.85%)	⬆️
extensions	5.24% <0.00%> (-0.01%)	⬇️
unit-adaptivity	37.41% <79.16%> (+<0.01%)	⬆️
unit-basics	13.82% <0.00%> (-0.01%)	⬇️
unit-celldata	21.43% <70.83%> (+0.01%)	⬆️
unit-fespaces-1	32.75% <81.94%> (+0.03%)	⬆️
unit-fespaces-2	39.28% <84.72%> (+<0.01%)	⬆️
unit-fields	17.74% <0.00%> (-0.01%)	⬇️
unit-geometry	29.26% <29.57%> (+<0.01%)	⬆️
unit-multifield	31.34% <76.38%> (+<0.01%)	⬆️
unit-odes	29.18% <76.38%> (+0.02%)	⬆️
unit-referencefes	34.76% <72.22%> (+0.01%)	⬆️
unit-visualization	12.12% <0.00%> (-0.01%)	⬇️

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