[x] bug report
[ ] feature request

# Detailed description
cloudwatch logging doesn't work if USE_SSL is enabled. The problem seems to be in 
https://github.com/localstack/localstack/blob/f9d5c1a77088bf65e10d05a298ef7ab61fc64314/localstack/utils/cloudwatch/cloudwatch_util.py#L57
If protocol is https ,the service is enabled resolver returns False. Logging works normally when USE_SSL=0
Happens at least with 0.11.1, but seems to be the same problem with older versions also.

## Expected behavior
Cloudwatch logging works
...

## Actual behavior
Nothing is logged to cloudwatch logs

# Steps to reproduce
set USE_SSL=1

## Command used to start LocalStack
docker-compose up

import functools
from io import BytesIO
from contextlib import closing
from datetime import datetime, date
from six import with_metaclass
from six.moves import cStringIO as StringIO
from six.moves.urllib.parse import urlparse
from multiprocessing.dummy import Pool
from localstack import config
from localstack.config import DEFAULT_ENCODING
from localstack.constants import ENV_DEV
from localstack.utils import bootstrap
from localstack.utils.bootstrap import FuncThread
TMP_FILES = []
TMP_THREADS = []
TMP_PROCESSES = []
CACHE_CLEAN_TIMEOUT = 60 * 5
CACHE_MAX_AGE = 60 * 60
CACHE_FILE_PATTERN = os.path.join(tempfile.gettempdir(), '_random_dir_', 'cache.*.json')
last_cache_clean_time = {'time': 0}
mutex_clean = threading.Semaphore(1)
TIMESTAMP_FORMAT = '%Y-%m-%dT%H:%M:%S'
TIMESTAMP_FORMAT_MICROS = '%Y-%m-%dT%H:%M:%S.%fZ'
CODEC_HANDLER_UNDERSCORE = 'underscore'
DOWNLOAD_CHUNK_SIZE = 1024 * 1024
LOG = logging.getLogger(__name__)
INFRA_STOPPED = False
CACHE = {}
SSL_CERT_LOCK = threading.RLock()
class CustomEncoder(json.JSONEncoder):