fix(android): fail early on missing input files

[Malinskiy]

Prevents misconfigured test runs from running

[codecov]

Codecov Report

Merging #857 (86c295a) into develop (a6c1281) will decrease coverage by 0.19%.
The diff coverage is 0.00%.

❗ Current head 86c295a differs from pull request most recent head 3ce16d4. Consider uploading reports for the commit 3ce16d4 to get more accurate results

@@              Coverage Diff              @@
##             develop     #857      +/-   ##
=============================================
- Coverage      59.54%   59.36%   -0.19%     
  Complexity       798      798              
=============================================
  Files            214      214              
  Lines           4398     4412      +14     
  Branches         693      702       +9     
=============================================
  Hits            2619     2619              
- Misses          1452     1466      +14     
  Partials         327      327              

Files	Coverage Δ
...y/marathon/config/LogicalConfigurationValidator.kt	4.16% <0.00%> (-0.38%)	⬇️
...skiy/marathon/config/vendor/VendorConfiguration.kt	39.09% <0.00%> (-4.79%)	⬇️

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