Only download demo certs when integTest run with -Dsecurity.enabled=true

[cwperks]

Description

This PR is a small change to only download the demo certs when run with -Dsecurity.enabled=true. If security is not enabled, downloading demo certs is not necessary.

Check List

• New functionality includes testing.
• New functionality has been documented.
• API changes companion pull request created.
• Commits are signed per the DCO using --signoff.
• Public documentation issue/PR created.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 37.67%. Comparing base (fa0f422) to head (30057a1).
Report is 1 commits behind head on main.

❌ Your project status has failed because the head coverage (37.67%) is below the target coverage (75.00%). You can increase the head coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #737   +/-   ##
=========================================
  Coverage     37.67%   37.67%           
  Complexity      135      135           
=========================================
  Files            22       22           
  Lines          1189     1189           
  Branches        109      109           
=========================================
  Hits            448      448           
  Misses          704      704           
  Partials         37       37           

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