Add `supports :capture` to supported subclasses

[miq-bot]

Checked commit https://github.com/agrare/manageiq-providers-ibm_cic/commit/8bfe16db42a52c4d3a723acfca0858fcf2311028 with ruby 2.6.10, rubocop 1.28.2, haml-lint 0.35.0, and yamllint 1 file checked, 0 offenses detected Everything looks fine. :trophy: