terraform/AWS: Use "output yaml" for the region setting

Refactor: Remove the line in terraform.Makefile that sets
"terraform_aws_region", and just pass it directly from Kconfig
via an "output yaml" directive.

Signed-off-by: Chuck Lever <[email protected]>

Author: chucklever

scripts/terraform.Makefile

@@ -48,7 +48,6 @@ KDEVOPS_MRPROPER += $(KDEVOPS_NODES)
 DEFAULT_DEPS_REQS_EXTRA_VARS += $(KDEVOPS_TFVARS)
 
 ifeq (y,$(CONFIG_TERRAFORM_AWS))
-TERRAFORM_EXTRA_VARS += terraform_aws_region=$(subst ",,$(CONFIG_TERRAFORM_AWS_REGION))
 TERRAFORM_EXTRA_VARS += terraform_aws_av_region=$(subst ",,$(CONFIG_TERRAFORM_AWS_AV_REGION))
 TERRAFORM_EXTRA_VARS += terraform_aws_ami_owner=$(subst ",,$(CONFIG_TERRAFORM_AWS_AMI_OWNER))
 TERRAFORM_EXTRA_VARS += terraform_aws_ns='$(CONFIG_TERRAFORM_AWS_NS)'

terraform/aws/kconfigs/Kconfig.location

@@ -72,6 +72,7 @@ endchoice
 
 config TERRAFORM_AWS_REGION
 	string
+	output yaml
 	default "us-west-2" if TERRAFORM_AWS_US_WEST_2
 	default "us-west-1" if TERRAFORM_AWS_US_WEST_1
 	default "us-east-2" if TERRAFORM_AWS_US_EAST_2