Ingest Manager: do not break UI on package issue

[mtojek]

Accidentally I screwed up single file (Kibana map) in the package. The entire UI crashed with a JS error, preventing me from doing any action.

What do you think about skipping damaged integrations and let UI work without them? A nice-to-have feature would be also a top banner informing about a package problem.

[elasticmachine]

Pinging @elastic/ingest-management (Team:Ingest Management)

[skh]

I'm moving this to beta 1. We need to be sure to catch errors during the installation of Kibana assets, but I was having a hard time triggering these errors from packages from a local package registry -- if I try to pass it broken JSON for example, the package registry would catch that during mage build (which is a good thing).

If you have a Kibana asset that is valid JSON and still causes errors, please add it here in a comment (in full).