Modified web3 address to be optional for EthOS

[eswarasai]

No description provided.

[codecov]

Codecov Report

Merging #1148 into master will decrease coverage by 0.04%.
The diff coverage is 19.14%.

@@            Coverage Diff             @@
##           master    #1148      +/-   ##
==========================================
- Coverage   31.84%   31.79%   -0.05%     
==========================================
  Files         115      115              
  Lines        7804     7819      +15     
  Branches     1009     1012       +3     
==========================================
+ Hits         2485     2486       +1     
- Misses       5210     5224      +14     
  Partials      109      109

Impacted Files	Coverage Δ
app/ethos/utils.py	22.41% <27.77%> (+2.41%)	⬆️
app/ethos/views.py	22.72% <4.16%> (+0.4%)	⬆️
app/ethos/models.py	34.88% <60%> (-0.38%)	⬇️
app/app/settings.py	83.04% <0%> (-1.76%)	⬇️

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[thelostone-mc]

Yup that seems to have covered everything that @owocki had asked for.

@mbeacom ?