Replace `sv_pipeline_base_docker` with `sv_pipeline_docker`

[VJalili]

A follow-up from https://github.com/broadinstitute/gatk-sv/pull/633

Since both sv_pipeline_base_docker and sv_pipeline_docker are references to the same docker image, this PR implements the following changes to consolidate them:

• [x] If a workflow has both sv_pipeline_docker and sv_pipeline_base_docker, remove sv_pipeline_base_docker and replaces all runtime references with sv_pipeline_docker.
• [x] If a workflow does not have sv_pipeline_docker, then rename sv_pipeline_base_docker to sv_pipeline_docker.
• [x] Update all the templates according to the above changes.

A few other docker image variables also use the same image as sv_pipeline_docker. I will update these variables similarly in follow-up PRs.

[VJalili]

Thank you, @mwalker174!

I hope you didn't have to do it all by hand :)

I did! :) I think that was the only option to make sure the changes were correctly applied.