Initialize variable as empty if not passed; fixes #2876

[mbentley]

Signed-off-by: Matt Bentley mbentley@vmware.com

What this PR does / why we need it

Addresses unexpected behavior in airgap script

Which issue(s) this PR fixes

Fixes #2876

Describe testing done for PR

Validated that the script runs with the change.

Release note

n/a - not really release note worthy

PR Checklist

• Squash the commits into one or a small number of logical commits
  
• Use good commit messages
• Ensure PR contains terms all contributors can understand and links all contributors can access

Additional information

Special notes for your reviewer

[codecov]

Codecov Report

Merging #2878 (51fb941) into main (cb46355) will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #2878   +/-   ##
=======================================
  Coverage   43.82%   43.83%           
=======================================
  Files         414      414           
  Lines       41295    41295           
=======================================
+ Hits        18097    18101    +4     
+ Misses      21503    21500    -3     
+ Partials     1695     1694    -1     

Impacted Files	Coverage Δ
addons/controllers/clusterbootstrap_controller.go	63.90% <0.00%> (+0.35%)	⬆️

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[vuil]

lgtm, thanks for submitting the issue and fixing it!

[vuil]

@mbentley please see the link in the vmwclabot check for details on signing a CLA as a contributor to vmware-tanzu projects like this one.

[mbentley]

@mbentley please see the link in the vmwclabot check for details on signing a CLA as a contributor to vmware-tanzu projects like this one.

As a VMware employee, I've gone through the steps suggested when I originally opened #2877 and am now a member of the GitHub org. Anything else I am needing to do? Also checking internally to see if anyone might have any ideas why the @vmwclabot is asking for the CLA to be signed when I am a member of the vmware-tanzu org.

[mbentley]

@vuil - looks like everything should be OK from a merging standpoint; someone was able to fix the CLA issue.