EES-3845 Use official mongo driver

[vgarvardt]

Official mongo driver is available for pretty long time. Would be nice to start using it instead of community one.

[codecov[bot]]

Codecov Report

Merging #459 into master will decrease coverage by 0.63%. The diff coverage is 1.47%.

@@            Coverage Diff             @@
##           master     #459      +/-   ##
==========================================
- Coverage   45.21%   44.58%   -0.64%     
==========================================
  Files          77       77              
  Lines        2696     2723      +27     
==========================================
- Hits         1219     1214       -5     
- Misses       1399     1431      +32     
  Partials       78       78              

Impacted Files	Coverage Δ
pkg/api/mongodb_repository.go	0.00% <0.00%> (ø)
pkg/plugin/basic/mongodb_repository.go	0.00% <0.00%> (-4.35%)	:arrow_down:
pkg/plugin/oauth2/mongodb_repository.go	0.00% <0.00%> (ø)
pkg/plugin/oauth2/setup.go	8.24% <0.00%> (-0.09%)	:arrow_down:
pkg/proxy/definition.go	68.96% <0.00%> (ø)
pkg/plugin/basic/setup.go	82.50% <50.00%> (-7.50%)	:arrow_down:

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[iammuho]

+1

[aleksandrzhiliaev]

+1