[Bouncy Castle] include bc into pulsar-client fix docs (#8491)

### Motivation
The docs of bc need an update after merge PR #7453, also we could include bc in the pulsar client to avoid reference it in other modules.

### Modifications

- fix the docs after fix PR 7453;
- make pulsar client include bc module; avoid other modules to include bc.
- fix the pulsar-function bc jar issue.

### Verifying this change
all the tests passed.
4 files changed
tree: 13745f430bd6b402ad00bf69746230b5d8ce00ec
  1. distribution/
  2. docker/
  3. tests/