add script to delete deployments

[jodyhuntatx]

When bringing up a new cluster, one often needs to delete the one that isn't working. I hacked this from 3_deploy_conjur_cluster.sh and 4_create_load_balancer.sh:

$ cat delete-deployments.sh
#!/bin/bash
#set -eo pipefail

. utils.sh

announce "Deleting Conjur cluster."

set_namespace $CONJUR_NAMESPACE_NAME

conjur_appliance_image=$(platform_image "conjur-appliance")

echo "deleting main cluster"
if $cli get statefulset &>/dev/null; then # this returns non-0 if platform doesn't support statefulset
conjur_cluster_template="./$PLATFORM/conjur-cluster-stateful.yaml"
else
conjur_cluster_template="./$PLATFORM/conjur-cluster.yaml"
fi
sed -e "s#{{ CONJUR_APPLIANCE_IMAGE }}#$conjur_appliance_image#g" $conjur_cluster_template |
$cli delete -f -

echo "deleting load balancer"
docker_image=$(platform_image haproxy)

sed -e "s#{{ DOCKER_IMAGE }}#$docker_image#g" "./$PLATFORM/haproxy-conjur-master.yaml" |
$cli delete -f -

echo "deleting followers"
sed -e "s#{{ CONJUR_APPLIANCE_IMAGE }}#$conjur_appliance_image#g" "./$PLATFORM/conjur-follower.yaml" |
sed -e "s#{{ AUTHENTICATOR_ID }}#$AUTHENTICATOR_ID#g" |
$cli delete -f -

sleep 10

echo "Waiting for Conjur pods to terminate..."
conjur_pod_count=0
wait_for_it 300 "$cli describe po conjur-cluster | grep Status: | grep -c Running | grep -q $conjur_pod_count"

echo "Cluster deleted."