Add product: azure-service-fabric

[erikadoyle]

Purpose

Adding azure-service-fabric to product metadata so that Service Fabric samples will be filterable via Microsoft Docs Samples catalog.

Does this introduce a breaking change?

[ ] Yes
[x] No

Pull Request Type

What kind of change does this Pull Request introduce?

[ ] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Documentation content changes
[x] Other... Please describe: metadata addition

How to Test

N/A

What to Check

Verify that the following are valid

• azure-service-fabric is a valid value for products field, per MS Docs metadata taxonomy