A flaky test revealed that after `clients::stop()` was called,
the `old_clients` collection was sometimes not empty,
indicating that some clients were not being stopped correctly.
This resulted in sanitizer errors when objects went out of scope at the end of the test.
This patch modifies `stop()` to ensure all clients, including those in `old_clients`,
are stopped, guaranteeing a clean shutdown.
This commit introduces TLS encryption support for vector store connections.
A new configuration option is added:
- vector_store_encryption_options.truststore: path to the trust store file
To enable secure connections, use the https:// scheme in the
vector_store_primary_uri/vector_store_secondary_uri configuration options.
Fixes: VECTOR-327
The maximum backoff delay for status checking now depends on the
`read_request_timeout_in_ms` configuration option. The delay is set
to twice the value of this parameter.
This exception should only occur due to internal errors, not client or external issues.
If triggered, it indicates an internal problem. Therefore, we notify about this exception
using on_internal_error_noexcept.
