Upstream terraform-provider-google-beta#1766

[emilymye]

Upstream https://github.com/terraform-providers/terraform-provider-google-beta/pull/1766/files

Fixes hashicorp/terraform-provider-google#5768

Release Note Template for Downstream PRs (will be copied)

container: Fixed panic when upgrading `google_container_cluster` with autoscaling block 

[modular-magician]

Hi! I'm the modular magician. Your PR generated some diffs in downstreams - here they are.

Diff report:

Terraform Beta: Diff ( 1 file changed, 3 insertions(+), 1 deletion(-))

[emilymye]

@chrisst @megan07 i kinda want to cherrypick this into next release if possible

[modular-magician]

Hi! I'm the modular magician. Your PR generated some diffs in downstreams - here they are.

Diff report:

Terraform GA: Diff ( 1 file changed, 7 insertions(+), 2 deletions(-))
Terraform Beta: Diff ( 1 file changed, 7 insertions(+), 2 deletions(-))

[modular-magician]

Hi! I'm the modular magician. Your PR generated some diffs in downstreams - here they are.

Diff report:

Terraform GA: Diff ( 1 file changed, 7 insertions(+), 2 deletions(-))
Terraform Beta: Diff ( 1 file changed, 7 insertions(+), 2 deletions(-))