dbx sync failed with ClientConnectorCertificateError

[careychou]

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Expected Behavior

dbx sync from local to dbfs

Current Behavior

raise a certificate Error

ClientConnectorCertificateError: Cannot connect to host xxxx.cloud.databricks.com:443 ssl:True [SSLCertVerificationError: (1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self signed certificate in certificate chain (_ssl.c:1129)')]

Steps to Reproduce (for bugs)

dbx sync dbfs

Context

dbx tries to create https connection to the URL : "https://xxxx.cloud.databricks.com/api/2.0/dbfs/mkdirs"

│    99 │   │   │   more_opts = {"ssl": ssl} if ssl is not None else {}                            │                                       │
│   100 │   │   │   async with session.post(url=url, json=json_data, headers=headers, **more_opt   │
│   101 │   │   │   │   if resp.status in ok_status:                                               │
│   102 │   │   │   │   │   break    ```

Test the same URL using curl -v works fine without certificate error. 

## Your Environment
MacOS BigSur 11.6.8
Python 3.9.5
dbx==0.8.7

* dbx version used:
* Databricks Runtime version: 11.3