regression: vtgate hangs if started before DDL + vschema

[derekperkins]

From @tirsen

We bumped to latest Vitess master SHA and we’re seeing this error in our test suite:

unsharded keyspace %s has multiple shards: possible cause: sharded keyspace is marked as unsharded in vschema

Workaround:

If we move the start of the vtgate to AFTER deploying the DDL and vschema then it works

This works ok for the standard examples, which go through a specific startup order. For helm charts however, there is no ordering guarantee on startup, so this will prevent any Kubernetes installs from working out of the gate.

[sougou]

Looks like this is fixed now.