Upgrade guide - google_monitoring_*

[c2thorn]

Upgrade guide for #8914 && #9065

Release Note Template for Downstream PRs (will be copied)

[modular-magician]

Hi there, I'm the Modular magician. I've detected the following information about your changes:

Diff report

Your PR generated some diffs in downstreams - here they are.

Terraform GA: Diff ( 1 file changed, 7 insertions(+))
Terraform Beta: Diff ( 1 file changed, 7 insertions(+))

[modular-magician]

Hi there, I'm the Modular magician. I've detected the following information about your changes:

Diff report

Your PR generated some diffs in downstreams - here they are.

Terraform GA: Diff ( 1 file changed, 7 insertions(+))
Terraform Beta: Diff ( 1 file changed, 7 insertions(+))

[modular-magician]

Hi there, I'm the Modular magician. I've detected the following information about your changes:

Diff report

Your PR generated some diffs in downstreams - here they are.

Terraform GA: Diff ( 1 file changed, 16 insertions(+))
Terraform Beta: Diff ( 1 file changed, 16 insertions(+))