Commits on Jan 23, 2020

1. ci-operator/templates/openshift/installer: Shared subnets for new reg… …

   …ions
   
   Catching up with b717933
   (ci-operator/templates/openshift/installer/cluster-launch-installer-*:
   Random AWS regions for IPI, 2020-01-23, openshift#6833), add shares subnets for
   the new regions.  This is basically as described in 424a04a (Add
   shared vpc CI job for installer repo and informing periodics,
   2019-08-22, openshift#5550), although I've dropped the --stack-policy-body
   mentioned in that commit message (I dunno what it was about, since the
   commit message didn't give it the argument that --stack-policy-body
   expects).  Generated using:
   
     $ export AWS_PROFILE=ci  # or whatever you call it locally
     $ git fetch origin
     $ date --iso=m --utc
     2020-01-23T20:41+0000
     $ git checkout origin/release-4.3
     $ git --no-pager log --oneline -1
     2055609f9 (HEAD, origin/release-4.3) Merge pull request openshift#2928 from ashcrow/4.3-signed-rhcos-bump
   
   with:
   
     for REGION in us-east-1 us-west-1 us-west-2
     do
       COUNT=3
       if test us-west-1 = "${REGION}"
       then
         COUNT=2
       fi
       for INDEX in 1 2 3 4
       do
         NAME="do-not-delete-shared-vpc-${INDEX}"
         aws --region "${REGION}" cloudformation create-stack --stack-name "${NAME}" --template-body "$(cat upi/aws/cloudformation/01_vpc.yaml)" --parameters "ParameterKey=AvailabilityZoneCount,ParameterValue=${COUNT}" >/dev/null
         aws --region "${REGION}" cloudformation wait stack-create-complete --stack-name "${NAME}"
         SUBNETS="$(aws --region "${REGION}" cloudformation describe-stacks --stack-name "${NAME}" | jq -c '[.Stacks[].Outputs[] | select(.OutputKey | endswith("SubnetIds")).OutputValue | split(",")[]]' | sed "s/\"/'/g")"
         echo "${REGION}_$((INDEX - 1))) subnets=\"${SUBNETS}\";;"
       done
     done
   
   which spits out:
   
     us-east-2_0) subnets="['subnet-0faf6d16c378ee7a7','subnet-0e104572db1b7d092','subnet-014ca96c04f36adec','subnet-0ea06057dceadfe8e','subnet-0689efe5e1f9f4212','subnet-0d36bb8edbcb3d916']";;
     us-east-2_1) subnets="['subnet-085787cc4b80b84b2','subnet-09dfbf66e8f6e5b50','subnet-0db5d90ff3087444e','subnet-047f15f2a0210fbe0','subnet-0bf13f041c4233849','subnet-0e2a5320549e289d8']";;
     ...
   
   The COUNT bit for us-west-1 is because our CI account only has access
   to two zones there:
   
     $ aws --region us-west-1 ec2 describe-availability-zones --output text
     AVAILABILITYZONES		 us-west-1					available												usw1-az3 us-west-1a
     AVAILABILITYZONES		 us-west-1					available												usw1-az1 us-west-1b

   

   wking committed Jan 23, 2020
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