Update Prometheus alerting rules after upgrading to 0.17.0

update-alerting-rules.py

#!/usr/bin/python

import re
import os
import sys

for root, dirs, files in os.walk('.'):
    if root.find('.git') != -1 or not files:
        continue

    for kv_file in files:
        annotation_regex = 'SUMMARY|DESCRIPTION|RUNBOOK'
        with open("{}/{}".format(root, kv_file), 'r') as fh:
            file_contents = []
            annotations = []
            for line in fh:
                if re.search(annotation_regex, line):
                    key, value = line.split(' ', 1)
                    key = key.lower()
                    line = "{} = {},\n".format(key, value.strip('\n'))
                    annotations.append("    {}".format(line))
                else:
                    line = line.replace('WITH', 'LABELS')
                    file_contents.append(line)

            if annotations:
                annotations.insert(0, 'ANNOTATIONS {\n')
                annotations.append('}\n')
                file_contents = file_contents + annotations
                try:
                    with open("{}/{}.new".format(root, kv_file), 'w') as new_fh:
                        new_fh.write(''.join(file_contents))
                    new_file = "{}/{}.new".format(root, kv_file)
                    original_file = "{}/{}".format(root, kv_file)
                    os.rename(new_file, original_file)
                except IOError as exc:
                    print >> sys.stderr, exc
                    sys.exit(1)

sys.exit(0)

@beorn7 thanks for your contribution.