tiltfile: handle duplicate resources without erroring

[nicks]

Hello @landism,

Please review the following commits I made in branch nicks/duplicate:

33d4bb1 (2019-07-15 10:21:19 -0400)
tiltfile: handle duplicate resources without erroring
fixes #1853
helps with #1852, until we find a better way to address this

[landism]

well, that's a bummer. is there a valid use case for duplicate resources, or is this purely a matter of "well kubectl accepts my yaml - why won't tilt?"

[nicks]

ya, i think there are probably a lot of cases where people have scripts that pull in the same resource multiple times, and it's generally ok.

It's only really a problem if the resources differ in some way

maybe we should do a deep comparison and de-dupe

[AleF83]

In my case I call kubectl apply to yaml with namespace definition first and then kubectl apply to the whole folder that contains several objects, including the namespace.