RHINENG-5394: run vacuum in goroutine so api won't time out

[psegedy]

Secure Coding Practices Checklist GitHub Link

• https://github.com/RedHatInsights/secure-coding-checklist

Secure Coding Checklist

• Input Validation
• Output Encoding
• Authentication and Password Management
• Session Management
• Access Control
• Cryptographic Practices
• Error Handling and Logging
• Data Protection
• Communication Security
• System Configuration
• Database Security
• File Management
• Memory Management
• General Coding Practices

[jira-linking]

Referenced Jiras:
https://issues.redhat.com/browse/RHINENG-5394

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (997b6bc) 62.00% compared to head (a4294a5) 62.03%.
Report is 4 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1354      +/-   ##
==========================================
+ Coverage   62.00%   62.03%   +0.02%     
==========================================
  Files         108      108              
  Lines        6811     6811              
==========================================
+ Hits         4223     4225       +2     
+ Misses       2054     2052       -2     
  Partials      534      534              

Flag	Coverage Δ
unittests	62.03% <ø> (+0.02%)	⬆️

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