feat(sync-v2): add needed storage indexes

[jansegre]

No description provided.

[codecov]

Codecov Report

Merging #6 (a27286b) into dev (0295dac) will decrease coverage by 0.51%.
The diff coverage is 78.48%.

❗ Current head a27286b differs from pull request most recent head 9f5a900. Consider uploading reports for the commit 9f5a900 to get more accurate results

@@            Coverage Diff             @@
##              dev       #6      +/-   ##
==========================================
- Coverage   82.87%   82.35%   -0.52%     
==========================================
  Files         118      148      +30     
  Lines       12205    14608    +2403     
  Branches     1664     2081     +417     
==========================================
+ Hits        10115    12031    +1916     
- Misses       1722     2129     +407     
- Partials      368      448      +80     

Impacted Files	Coverage Δ
hathor/__init__.py	100.00% <ø> (ø)
hathor/api_util.py	100.00% <ø> (ø)
hathor/client.py	43.36% <ø> (ø)
hathor/conf/__init__.py	100.00% <ø> (ø)
hathor/conf/get_settings.py	75.00% <ø> (ø)
hathor/conf/testnet.py	100.00% <ø> (ø)
hathor/conf/unittests.py	100.00% <ø> (ø)
hathor/difficulty.py	84.82% <ø> (+0.13%)	⬆️
hathor/exception.py	100.00% <ø> (ø)
hathor/indexes.py	94.70% <ø> (ø)
... and 198 more

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