ci/tests: scheduled cloud-cleaner for Azure

This introduces a script to run cloud-cleaner with a schedule. It's
currently working with Azure only and therefore needed a change to
cloud-cleaner code as well. Using azure-cli it gets a list of resources
from $AZURE_RESOURCE_GROUP and then sorts out only resources that
are older than $HOURS_BACK and are not storage accounts.
Then it processes the list further leaving only list with unique
TEST_ID to supply to the cloud-cleaner.

schutzbot/scheduled_cloud_cleaner.sh

@@ -0,0 +1,56 @@
+#!/bin/bash
+
+# Azure cleanup
+if ! hash az; then
+    # this installation method is taken from the official docs:
+    # https://docs.microsoft.com/cs-cz/cli/azure/install-azure-cli-linux?pivots=dnf
+    sudo rpm --import https://packages.microsoft.com/keys/microsoft.asc
+    echo -e "[azure-cli]
+name=Azure CLI
+baseurl=https://packages.microsoft.com/yumrepos/azure-cli
+enabled=1
+gpgcheck=1
+gpgkey=https://packages.microsoft.com/keys/microsoft.asc" | sudo tee /etc/yum.repos.d/azure-cli.repo
+
+  greenprint "Installing azure-cli"
+  sudo dnf install -y azure-cli
+  az version
+fi
+
+az login --service-principal --username "${AZURE_CLIENT_ID}" --password "${AZURE_CLIENT_SECRET}" --tenant "${AZURE_TENANT_ID}"
+
+# List all resources from AZURE_RESOURCE_GROUP
+RESOURCE_LIST=$(az resource list -g "$AZURE_RESOURCE_GROUP")
+RESOURCE_COUNT=$( echo "$RESOURCE_LIST" | jq .[].name | wc -l)
+
+# filter out resources older than X hours
+DELETE_TIME=$(date -d "- $HOURS_BACK hours" +%s)
+OLD_RESOURCE_LIST_NAMES=()
+for i in $(seq 0 $(("$RESOURCE_COUNT"-1))); do
+    RESOURCE_TIME=$(echo "$RESOURCE_LIST" | jq .[$i].createdTime | tr -d '"')
+    RESOURCE_TYPE=$(echo "$RESOURCE_LIST" | jq .[$i].type | tr -d '"')
+    RESOURCE_TIME_SECONDS=$(date -d "$RESOURCE_TIME" +%s)
+    if [[ "$RESOURCE_TIME_SECONDS" -lt "$DELETE_TIME" && "$RESOURCE_TYPE" != Microsoft.Storage/storageAccounts ]]; then
+        OLD_RESOURCE_LIST_NAMES+=("$(echo "$RESOURCE_LIST" | jq .["$i"].name | sed -e 's/^[^-]*-//' | tr -d '"')")
+    fi
+done
+
+#Exit early if no there are no resources to delete
+if [ ${#OLD_RESOURCE_LIST_NAMES[@]} == 0 ]; then
+    echo "Nothing to delete."
+    exit 0
+fi
+
+# Keep only unique resource names
+mapfile -t RESOURCE_TO_DELETE_LIST  < <(printf "%s\n" "${OLD_RESOURCE_LIST_NAMES[@]}" | sort -u)
+echo "${RESOURCE_TO_DELETE_LIST[@]}"
+
+TO_DELETE_COUNT=${#RESOURCE_TO_DELETE_LIST[@]}
+echo "There are resources from $TO_DELETE_COUNT test runs to delete."
+
+for i in $(seq 0 $(("$TO_DELETE_COUNT"-1))); do
+    echo "Running cloud-cleaner in Azure for resources with TEST_ID: ${RESOURCE_TO_DELETE_LIST[$i]}"
+    TEST_ID=${RESOURCE_TO_DELETE_LIST[$i]} /usr/libexec/osbuild-composer-test/cloud-cleaner
+done
+
+echo "Azure cleanup complete!"