tencentcloud - mysql-backup - fix for casting date when status is not SUCCESS

[thisisshi]

Fixes the following bug:

Traceback (most recent call last):
  File "/Users/sonny/dev/thisisshi/cloud-custodian/c7n/commands.py", line 302, in run
    policy()
  File "/Users/sonny/dev/thisisshi/cloud-custodian/c7n/policy.py", line 1329, in __call__
    resources = mode.run()
  File "/Users/sonny/dev/thisisshi/cloud-custodian/c7n/policy.py", line 330, in run
    resources = self.policy.resource_manager.resources()
  File "/Users/sonny/dev/thisisshi/cloud-custodian/tools/c7n_tencentcloud/c7n_tencentcloud/query.py", line 307, in resources
    resources = self.augment(resources)
  File "/Users/sonny/dev/thisisshi/cloud-custodian/tools/c7n_tencentcloud/c7n_tencentcloud/resources/mysql_backup.py", line 54, in augment
    item["Date"] = isoformat_datetime_str(item["Date"],
  File "/Users/sonny/dev/thisisshi/cloud-custodian/tools/c7n_tencentcloud/c7n_tencentcloud/utils.py", line 28, in isoformat_datetime_str
    dt = timezone_from.localize(datetime.strptime(date_str, date_str_format))
  File "/usr/local/Cellar/[email protected]/3.10.6_2/Frameworks/Python.framework/Versions/3.10/lib/python3.10/_strptime.py", line 568, in _strptime_datetime
    tt, fraction, gmtoff_fraction = _strptime(data_string, format)
  File "/usr/local/Cellar/[email protected]/3.10.6_2/Frameworks/Python.framework/Versions/3.10/lib/python3.10/_strptime.py", line 349, in _strptime
    raise ValueError("time data %r does not match format %r" %
ValueError: time data '0000-00-00 00:00:00' does not match format '%Y-%m-%d %H:%M:%S'

policy:

  - name: tc-mysql-backup
    resource: tencentcloud.mysql-backup

[kapilt]

lgtm