chore: statds metrics for cache invalidation

[bkyryliuk]

SUMMARY

adds statsd metric for cache invalidation
fixes gauge interface for statsd: https://statsd.readthedocs.io/en/stable/types.html

TEST PLAN

unit tests

[codecov-io]

Codecov Report

Merging #11701 (16dc573) into master (95246e8) will decrease coverage by 6.89%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #11701      +/-   ##
==========================================
- Coverage   62.86%   55.96%   -6.90%     
==========================================
  Files         889      408     -481     
  Lines       43054    14469   -28585     
  Branches     4016     3729     -287     
==========================================
- Hits        27064     8097   -18967     
+ Misses      15811     6207    -9604     
+ Partials      179      165      -14     

Flag	Coverage Δ
cypress	55.96% <ø> (?)
javascript	?
python	?

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Impacted Files	Coverage Δ
...uperset-frontend/src/dashboard/util/dnd-reorder.js	0.00% <0.00%> (-100.00%)	⬇️
...rset-frontend/src/dashboard/util/getEmptyLayout.js	0.00% <0.00%> (-100.00%)	⬇️
...dashboard/components/resizable/ResizableHandle.jsx	0.00% <0.00%> (-100.00%)	⬇️
.../src/dashboard/util/getFilterScopeFromNodesTree.js	0.00% <0.00%> (-93.48%)	⬇️
...src/dashboard/components/gridComponents/Header.jsx	10.52% <0.00%> (-86.85%)	⬇️
...rc/dashboard/components/gridComponents/Divider.jsx	13.33% <0.00%> (-86.67%)	⬇️
...set-frontend/src/views/CRUD/welcome/EmptyState.tsx	5.71% <0.00%> (-82.10%)	⬇️
...et-frontend/src/components/ListView/ActionsBar.tsx	11.11% <0.00%> (-81.20%)	⬇️
...et-frontend/src/components/Menu/LanguagePicker.tsx	0.00% <0.00%> (-80.00%)	⬇️
superset-frontend/src/components/Link.tsx	7.69% <0.00%> (-79.81%)	⬇️
... and 789 more

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