ui: fix userdata base64 encoding

[shwstppr]

Description

Fixes #7748

Types of changes

• Breaking change (fix or feature that would cause existing functionality to change)
• New feature (non-breaking change which adds functionality)
• Bug fix (non-breaking change which fixes an issue)
• Enhancement (improves an existing feature and functionality)
• Cleanup (Code refactoring and cleanup, that may add test cases)

Feature/Enhancement Scale or Bug Severity

Feature/Enhancement Scale

• Major
• Minor

Bug Severity

• BLOCKER
• Critical
• Major
• Minor
• Trivial

Screenshots (if appropriate):

How Has This Been Tested?

userdata-encoding.mp4

[shwstppr]

@blueorangutan ui

[blueorangutan]

@shwstppr a Jenkins job has been kicked to build UI QA env. I'll keep you posted as I make progress.

[blueorangutan]

UI build: ✔️
Live QA URL: https://qa.cloudstack.cloud/simulator/pr/7749 (QA-JID-125)

[codecov]

Codecov Report

Merging #7749 (f7fc22d) into 4.18 (d575cae) will decrease coverage by 0.01%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##               4.18    #7749      +/-   ##
============================================
- Coverage     13.02%   13.01%   -0.01%     
  Complexity     9028     9028              
============================================
  Files          2719     2720       +1     
  Lines        256868   256992     +124     
  Branches      40051    40078      +27     
============================================
- Hits          33449    33448       -1     
- Misses       219231   219357     +126     
+ Partials       4188     4187       -1     

see 13 files with indirect coverage changes

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[harikrishna-patnala]

Code LGTM, did not test it.

[shwstppr]

@blueorangutan ui

[blueorangutan]

@shwstppr a Jenkins job has been kicked to build UI QA env. I'll keep you posted as I make progress.

[shwstppr]

@blueorangutan ui

[blueorangutan]

@shwstppr a Jenkins job has been kicked to build UI QA env. I'll keep you posted as I make progress.

[blueorangutan]

UI build: ✔️
Live QA URL: https://qa.cloudstack.cloud/simulator/pr/7749 (QA-JID-128)

[weizhouapache]

code lgtm
tested ok