[bug] Add hostname-override flag to root command to support overriding SNI hostname

[ruscon]

zed context

zed context set some-env localhost:50052 ${SPICEDB_TOKEN} --certificate-path ${TLS_CA_FILE_PATH} --hostname-override spicedb.spicedb.svc.cluster.local

port forwarded from k8s

zed schema read

6:09PM ERR retrying gRPC call error="rpc error: code = Unavailable desc = connection error: desc = \"transport: authentication handshake failed: tls: failed to verify certificate: x509: certificate is valid for spicedb.spicedb.svc.cluster.local, *.spicedb.svc.cluster.local, not localhost\"" attempt=1

but
zed schema read --hostname-override spicedb.spicedb.svc.cluster.local
works ok.

Expect that zed schema read should work without --hostname-override

[tstirrat15]

Yeah, that's because not every option gets persisted to context. --insecure is the only flag other than hostname/token that gets persisted. Is the ask that additional options get persisted?

[ruscon]

Is the ask that additional options get persisted?

I would add it because there is no point in specifying it every time.

In general, consider whether there are any other global flags that make sense to keep persisted.
If desired, if a global flag is passed, it could simply override the stored value for a specific request.

zed context set --help
Creates or overwrite a context

Usage:
  zed context set <name> <endpoint> <api-token> [flags]

Flags:
  -h, --help   help for set

Global Flags:
      --certificate-path string     path to certificate authority used to verify secure connections
      --endpoint string             spicedb gRPC API endpoint
      --hostname-override string    override the hostname used in the connection to the endpoint
      --insecure                    connect over a plaintext connection
      --log-format string           format of logs ("auto", "console", "json") (default "auto")
      --log-level string            verbosity of logging ("trace", "debug", "info", "warn", "error") (default "info")
      --max-message-size int        maximum size *in bytes* (defaults to 4_194_304 bytes ~= 4MB) of a gRPC message that can be sent or received by zed
      --max-retries uint            maximum number of sequential retries to attempt when a request fails (default 10)
      --no-verify-ca                do not attempt to verify the server's certificate chain and host name
      --permissions-system string   permissions system to query
      --proxy string                specify a SOCKS5 proxy address
      --request-id string           optional id to send along with SpiceDB requests for tracing
      --skip-version-check          if true, no version check is performed against the server
      --token string                token used to authenticate to SpiceDB