Update Review Board manual for new VersionVault/ClearCase support.

Review Request #2470 — Created April 27, 2022 and updated May 3, 2022, 7:14 p.m.

Information
Owner:	guest5076
Repository:	Review Board
Branch:
Bugs:
Depends On:
Commit:	6eeb962...
Reviewers
Groups:
People:	guest5076

Description

This updates our existing ClearCase manual entry to include information
about the new PowerPack-based implementation. The old SCMTool is still
available and still documented here, but I've tried to make it clear
that using it isn't ideal.

Testing Done:
Built HTML and checked the output.

Reviewed at https://reviews.reviewboard.org/r/12204/

Testing Done

Issues

Description	From	Last Updated
Test	guest7601	April 29, 2022, 4:56 a.m.
How review has multiple	guest7601	April 29, 2022, 5:09 a.m.

Fix it!

1. guest7601 April 29, 2022, 5:02 a.m.
  Hei
2. guest7601 April 29, 2022, 5:03 a.m.
  c
docs/manual/admin/index.rst (Diff revision 1)
Show all issues
```
Test
```
1. guest7601 April 29, 2022, 4:57 a.m.
  why
2. guest7601 April 29, 2022, 5:02 a.m.
  how

Fix it!

1. guest7601 April 29, 2022, 5:09 a.m.
  ok
docs/manual/admin/index.rst (Diff revision 1)
Show all issues
```
How review has multiple
```

docs/manual/admin/configuration/repositories/clearcase.rst (Diff revision 1)
```
testing comment
```
docs/manual/admin/configuration/repositories/index.rst (Diff revision 1)
```
testing: should this be removed?
```

Ship it!

You have a pending review.

Review Board 4.0.5 alpha 0 (dev)

Update Review Board manual for new VersionVault/ClearCase support.

docs/manual/admin/index.rst (Diff revision 1)

docs/manual/admin/index.rst (Diff revision 1)