deployment: Adapt values to be quoted when installed in templates

Namely the values 'workerThreads', 'deletionRetryCount' and 'provisionRetryCount'.

There is some check in the main.go module which expects those to be a string so it can
convert them into an integer. Without this, we cannot actually provide the configuration
without hitting a conversion error. This should fix it.

(cherry picked from commit 7aa7e286)