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Summary of the issue

Context
I am trying to use gcloud with ECP offload engine, on a macbook.

I am fairly certain this was caused by 247e2ad

CLOUDSDK_CONTEXT_AWARE_USE_ECP_HTTP_PROXY=false gcloud storage ls

Expected Behavior:
I expect that gcloud will correctly load SSL context with pyOpenSSL

Actual Behavior:

Instead it fails:

ERROR: (gcloud.storage.ls) There was a problem refreshing your current auth tokens: HTTPSConnectionPool(host='oauth2.mtls.googleapis.com', port=443): Max retries exceeded with url: /token (Caused by SSLError(SSLError(1, '[EVP: UNKNOWN_MAX_SIZE] unknown max size (_ssl.c:2711)')))

API client name and version

gcloud version
Google Cloud SDK 576.0.0

Reproduction steps

1. Make sure you're running gcloud version 576+
2. Make sure you're running on a mac.
3. Run the followign command:CLOUDSDK_CONTEXT_AWARE_USE_ECP_HTTP_PROXY=false gcloud storage ls

Reproduction steps: supporting files