* add support for imagePullSecrets
* Add doc and example value for imagePullSecrets
* simplify syntax for imagePullSecrets
Co-authored-by: Joe Previte <jjprevite@gmail.com>
New extraInitContainers configuration added.
It allows to pass template with a list of containers to execute before
main code-server container started. Main container will only start when
all init containers are completed (exited with 0 code).
Additionally changes the way extraContainers is used - instead of
toYaml use tpl, because this allows to
reference any values from extraContainers string.