This patch adds rocky specs repo.
In addition to that it also fixes below issues:
1. Adds a single template.rst for all branches in
doc/source/specs repo.
2. Fixes incorrect references in history section.
3. Creates missing symbolic links to specs templates.
4. Moves implemented specs from 'approved' to 'implemented'
directory.
In future we should have a tox script similar to [1] for
moving implemented specs from approved to implemented directory.
[1] dad9782fc1/tox.ini (L32)
Change-Id: I4499facd28b1cc48d425a8fe15930ebaa4ac24d9
c6c09dbe3c