Frank Martinez

**What kind of change does this PR introduce?** (check one with "x") ``` [x] Bugfix [] Feature [] Code style update (formatting, local variables) [] Refactoring (no functional changes, no...

**What kind of change does this PR introduce?** (check one with "x") ``` [] Bugfix [x] Feature [] Code style update (formatting, local variables) [] Refactoring (no functional changes, no...

Enhance Activity configuration and instantiation

1

**I'm submitting a ...** (check one with "x") ``` [] bug report => search github for a similar issue or PR before submitting [x] enhancement request [] feature request []...

External Service Registration/Discovery

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**Current behavior:** **Expected behavior:** Add a standard way to register trigger as a service in an external registry and also to look one up in an activity for example. Add...

**Current behavior:** No explicit configuration validation via json schema **Expected behavior:** Generate json schema for flogo.json configuration and all resources. A project should have the ability to enable/disable configuration validation....