pipelines - add timeoutSec for the SamplingService retrofit client

[adam-collins]

There is a timeoutSec pipelines.yaml value for sds, collectory, imageService, speciesListService and alaNameMatch. There a few different methods that do roughly the same thing:

• Create a OkHttpClient, making use of the timeoutSec.
• Create a Retrofit client using this OkHttpClient.

Do the same for the SamplingService retrofit client.