Add missing report headers

[mzazrivec]

This PR adds missing report headers for report columns added in #18944

Without this the ui-classic CI is failing with:

1) YAML reports regular reports 300_Migration Readiness - Virtual Machines/030_VMware VM Summary defines headers that match col_order
     Failure/Error: expect(headers).to eq(col_order)
     
       expected: 9
            got: 8
     
       (compared using ==)
     Shared Example Group: "all report type examples" called from ./spec/product/reports_spec.rb:65
     # ./spec/product/reports_spec.rb:26:in `block (3 levels) in <top (required)>'
  2) YAML reports regular reports 310_Migration Readiness - Providers/010_VMware Environment Summary defines headers that match col_order
     Failure/Error: expect(headers).to eq(col_order)
     
       expected: 8
            got: 7
     
       (compared using ==)
     Shared Example Group: "all report type examples" called from ./spec/product/reports_spec.rb:65
     # ./spec/product/reports_spec.rb:26:in `block (3 levels) in <top (required)>'

[miq-bot]

Checked commit mzazrivec@89c173a with ruby 2.4.6, rubocop 0.69.0, haml-lint 0.20.0, and yamllint 1.10.0
0 files checked, 0 offenses detected
Everything looks fine. 👍