Fix ISM issues

[Jakob3xD]

Description

• Fix ISM Transition to omitempty Conditions field
• Fix ISM Allocation field types

Issues Resolved

Closes #591

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 67.99%. Comparing base (06a6dc8) to head (b256229).
Report is 65 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #609       +/-   ##
===========================================
+ Coverage   57.29%   67.99%   +10.70%     
===========================================
  Files         315      376       +61     
  Lines        9823     8862      -961     
===========================================
+ Hits         5628     6026      +398     
+ Misses       2902     1555     -1347     
+ Partials     1293     1281       -12     

Flag	Coverage Δ
integration	60.35% <ø> (+9.51%)	⬆️
unit	15.37% <ø> (+2.53%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
plugins/ism/api_policies.go	100.00% <ø> (ø)

... and 274 files with indirect coverage changes