short-name is defined in extension descriptor root but read from metadata

[ia3andy]

Describe the bug
Extension.getShortName retrieve the value from metadata.short-name but the value is set in the root of each extension descriptors. ex:

---
name: "SmallRye Context Propagation"
short-name: "context propagation"
metadata:
  keywords:
  - "smallrye-context-propagation"
  - "microprofile-context-propagation"
  - "context-propagation"
  - "context"
  - "reactive"
  categories:
  - "reactive"

Expected

---
name: "SmallRye Context Propagation"
metadata:
  short-name: "context propagation"
  keywords:
  - "smallrye-context-propagation"
  - "microprofile-context-propagation"
  - "context-propagation"
  - "context"
  - "reactive"
  categories:
  - "reactive"

[maxandersen]

there is only a small subest of the extensions that have short-name listed.
just need updated to put in metadata.

[ia3andy]

@maxandersen are u taking care of it or should we assign someone?

[emmanuelbernard]

I'll do it

[maxandersen]

@emmanuelbernard i'm not seeing any updates/PR's that fixes this thus reopening.

[maxandersen]

@emmanuelbernard had pushed directly to master evil him ;)