Add labels to CRDs in install .yaml files to prevent errors during install

[samodell]

More background info in #968 , but tl;dr: Installs of multiple components sometimes fail due to race conditions happening in the way CRDs are applied. To fix this issue, we can label the CRDs in the install .yaml files so that we can control what is applied first. Goal is to have this in place for v0.5.

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[samodell]

A little more detail on the plan, from Evan in #docs on Slack:
"We're going to label all our CRDs, and then install the yaml with kubectl -l resource_definition=true .... the first time, then the second time without a label constraint."