Add support for namespace scenarios in prow (#134)

This will allow us to disrupt the entire service and validate
recovery/health.

prow/namespace-scenarios/prow_run.sh

@@ -0,0 +1,32 @@
+#!/bin/bash
+
+set -ex
+
+ls
+
+# Source env.sh to read all the vars
+source env.sh
+
+export KUBECONFIG=$KRKN_KUBE_CONFIG
+
+# cluster details
+echo "Printing cluster details"
+oc version
+cat $KRKN_KUBE_CONFIG
+oc config view
+echo "Printing node info"
+for node in $(oc get nodes | awk 'NR!=1{print $1}'); do oc get node/$node -o yaml; done
+
+source namespace-scenarios/env.sh
+
+krkn_loc=/root/kraken
+
+# Substitute config with environment vars defined
+envsubst < namespace_scenario.yaml.template > namespace-scenarios/namespace_scenario.yaml
+envsubst < config.yaml.template > namespace_config.yaml
+export SCENARIO_FILE="- namespace-scenarios/namespace_scenario.yaml"
+
+# Run Kraken
+cat namespace_config.yaml
+cat namespace-scenarios/namespace_scenario.yaml
+python3.9 $krkn_loc/run_kraken.py --config=namespace_config.yaml