Added proposal for HyperShift monitoring. (#981)

* Added proposal for HyperShift monitoring.

Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>

* nits.

Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>

* Addressed few comments.

Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>

* New data-plane design; Removed unrelevant (here) details around RHOBS.

Changes:
* Changed data-plane details given feedback from in-cluster team
* Changed how HyperShift admins can forward metrics to RHOBS on data-plane
* Removed details around RHOBS.

Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>

* Fixed action list.

Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>

* Updated enhancement.

Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>

* Added info about cluster ID.

Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>

* Graduation criteria finished, attempt to fix CI.

Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>

* CI fixes + rebase.

Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>

* CI fixes.

Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>

* CI lint.

Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>

* CI lint.

Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>

* CI lint.

Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>

* CI lint.

Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>

* CI lint.

Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>