[NGPIPELINE-523] Change out remote for serverUrl for Bitbucket MBPs

[kshultzCB]

Summary

This is a pull request to accompany cbn-site PR 1842.

Backstory

CORE-1897 was opened because a customer followed our documentation, and had a problem. They discovered that setting the remote field on a template for multibranch projects hosted on Bitbucket servers did not work. And in fact, it was defaulting to https://bitbucket.org. I opened NGPIPELINE-523 to fix what we thought at the time was a bug, but the correct fix turned out to be this documentation change.

Examples

Below is a sample template.yaml which will not work, because the remote field name is the wrong name.

version: 1
type: pipeline-template
templateType: MULTIBRANCH

name: KARL-MADE-THIS
description: Simple Java App With Maven
multibranch:
  branchSource:
    bitbucket:
      remote: https://bitbucket.beescloud.com
      repoOwner: KARL
      repository: catalog-repo
      credentialsId: dev1bbs

And here is a corrected version, which works correctly:

version: 1
type: pipeline-template
templateType: MULTIBRANCH

name: KARL-MADE-THIS
description: Simple Java App With Maven
multibranch:
  branchSource:
    bitbucket:
      serverUrl: https://bitbucket.beescloud.com
      repoOwner: KARL
      repository: catalog-repo
      credentialsId: dev1bbs