Revert "stop checking tag coverage before printing"
Revert "stop checking tag coverage before printing"

This reverts commit 55cad370a1b8081ed64cbbeecafa4692d898dde0.

This is breaking workflows for users, and the original
rationale remains un-inspiring. In particular, if
Simmetrix tag coverage APIs are slow, they should be fixed
(its definitely possible because ours are pretty fast).

yangf4/core,yangf4/core,yangf4/core,yangf4/core,yangf4/core