Fix settings

[philogicae]

No description provided.

[github-actions]

"summary": "This PR introduces changes to the configuration and environment setup of the Aleph.im SDK. The changes include updates to the .env.example, .gitignore, and src/aleph/sdk/conf.py files. Additionally, there are updates to the settings and environment variables for the SDK. The changes are focused on improving the configuration and environment setup, which are likely to be minor modifications that do not introduce significant risks.",
"highlight": [
"new file mode 100644 a/.env.example",
"new file mode 100644 a/.gitignore",
"index 38afc381..fc7f9d6b 100644 a/src/aleph/sdk/conf.py",
"DEFAULT_CONFIDENTIAL_FIRMWARE",
"DEFAULT_CONFIDENTIAL_FIRMWARE_HASH",
"DEFAULT_ROOTFS_SIZE",
"DEFAULT_INSTANCE_MEMORY",
"DEFAULT_HYPERVISOR",
"VM_URL_PATH",
"VM_URL_HOST",
"CHAINS_ENV",
"settings.delattr(f"CHAINS_{fields}")"
]
}

[1yam]

LGTM