add support for light to delay validation

[jmartin-tech]

Description

Add support for delayed validation in WiX light.exe tool, see -sval option.

Build the MSI that will be run against Smoke. Pass the -sval argument to delay validation until Smoke is run.

usage:

package :msi do
  wix_light_delay_validation true
end

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Maintainers

Please ensure that you check for:

• If this change impacts git cache validity, it bumps the git cache
  serial number
• If this change impacts compatibility with omnibus-software, the
  corresponding change is reviewed and there is a release plan
• If this change impacts compatibility with the omnibus cookbook, the
  corresponding change is reviewed and there is a release plan

[marcparadise]

@jmartin-r7 if you can also rebase this one after #843 merges, I can get it in right behind.

[jmartin-tech]

Rebased 👍

[marcparadise]

Excellent, thank you again