exporter-collector: proto files are missing from NPM package

[jordanworner]

What version of OpenTelemetry are you using?

0.7.0

What version of Node are you using?

v12.16.2

What did you do?

Updated @opentelemetry/exporter-collector to 0.7.0

What did you expect to see?

No errors

What did you see instead?

Warning: opentelemetry/proto/collector/trace/v1/trace_service.proto not found in any of the include paths node_modules/@opentelemetry/exporter-collector/build/src/platform/node/protos

Additional context

Looks like the package.json wasn't updated to include the .proto files in the published package

"files": [
  "build/src/**/*.js",
  "build/src/**/*.d.ts",
  "doc",
  "LICENSE",
  "README.md"
]

[obecny]

#1053

[obecny]

fixed in 0.8.1

[dyladan]

@jordanworner pls confirm 0.8.1 working if you get a chance.

[jordanworner]

@dyladan 0.8.1 LGTM