Upgrade to sdk master 8b77cb

[alpe]

Upgrade to lastest sdk

Note: there is a new LegacyQuerierHandler in modules that I could not set up proper due a lack of time. Some tests depend on this as query handler. I had to skip them.

[codecov]

Codecov Report

Merging #237 into 0.9.1_to_cosmos-sdk-0.39-master will decrease coverage by 12.65%.
The diff coverage is 14.06%.

@@                         Coverage Diff                          @@
##           0.9.1_to_cosmos-sdk-0.39-master     #237       +/-   ##
====================================================================
- Coverage                            32.42%   19.76%   -12.66%     
====================================================================
  Files                                   24       25        +1     
  Lines                                 3830     6419     +2589     
====================================================================
+ Hits                                  1242     1269       +27     
- Misses                                2521     5080     +2559     
- Partials                                67       70        +3     

Impacted Files	Coverage Δ
x/wasm/internal/keeper/test_fuzz.go	90.90% <0.00%> (-9.10%)	⬇️
x/wasm/internal/types/query.pb.go	0.72% <ø> (ø)
x/wasm/internal/types/types.go	31.81% <ø> (ø)
x/wasm/internal/types/types.pb.go	0.55% <5.95%> (+<0.01%)	⬆️
x/wasm/internal/keeper/querier.go	24.00% <13.17%> (-12.14%)	⬇️
x/wasm/module.go	17.02% <18.18%> (+0.35%)	⬆️
app/app.go	91.90% <100.00%> (+0.07%)	⬆️
app/encoding.go	100.00% <100.00%> (ø)
x/wasm/internal/keeper/test_common.go	87.28% <100.00%> (+0.21%)	⬆️

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[alpe]

Obsolete by #247