Fix stats emailer cronjobs

[Redande]

Multiple cronjobs are generated from values.yaml. They had identical name so only the last one was created, this PR gives unique names to the cronjobs based on the id defined in values.yaml. This should allow for multiple cronjobs from the same template (with differing schedules).

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 66.43%. Comparing base (bb98b52) to head (f4bbf92).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1265   +/-   ##
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  Coverage   66.43%   66.43%           
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  Files         144      144           
  Lines        6042     6042           
  Branches     1434     1434           
=======================================
  Hits         4014     4014           
  Misses       1889     1889           
  Partials      139      139           

Flag	Coverage Δ
backend	66.43% <ø> (ø)

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