Make E2E cleanup easier (#353)

* Make E2E cleanup easier
Signed-off-by: Fabian Kammel <fk@edgeless.systems>

hack/fetch-broken-e2e/.gitignore

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+azure
+gcp

hack/fetch-broken-e2e/README.md

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+# Motivation
+
+Sometimes E2E pipeline fails in a way that cleanup was not possible, but a state was stored. These scripts help with manual cleanup.
+
+## Usage
+
+```bash
+# Downloads states of all recent (last 20) runs
+./fetch.sh
+# Find the UID of cluster in Azure/GCP you want to delete
+./find.sh <UID>
+# Follow the instructions
+```

hack/fetch-broken-e2e/fetch.sh

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+#!/bin/bash
+
+set -euo pipefail
+
+LATEST_AZURE_RUNS=$(gh run list -R edgelesssys/constellation -w 'e2e Test Azure' --json databaseId  -q '.[].databaseId')
+echo $LATEST_AZURE_RUNS
+for RUN_ID in $LATEST_AZURE_RUNS
+do
+    # Might fail, because no state was written, because e2e pipeline failed early
+    # Or, because state was downloaded by earlier run of this script
+    gh run download ${RUN_ID} -R edgelesssys/constellation -n constellation-state.json -D azure/${RUN_ID} || true
+done
+
+LATEST_GCP_RUNS=$(gh run list -R edgelesssys/constellation -w 'e2e Test GCP' --json databaseId  -q '.[].databaseId')
+echo $LATEST_GCP_RUNS
+for RUN_ID in $LATEST_GCP_RUNS
+do
+    # Might fail, because no state was written, because e2e pipeline failed early
+    # Or, because state was downloaded by earlier run of this script
+    gh run download ${RUN_ID} -R edgelesssys/constellation -n constellation-state.json -D gcp/${RUN_ID} || true
+done

hack/fetch-broken-e2e/find.sh

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+#!/bin/bash
+
+set -euo pipefail
+
+TO_DELETE=$(grep -lr "\"uid\": \"${1}\"" . || true)
+if [ -z "$TO_DELETE" ]
+then
+    printf "Unable to find '${1}'\n"
+else
+    printf "Statefile found. You should run:\n\n"
+    printf "cd %s\n" $TO_DELETE
+    printf "constellation terminate\n\n"
+fi