move fleece svn dir (renaming to johnzon)

[Hendrik Dev]

Infra asked me "Have you moved the fleece svn dir yet? if not, please
do it or have an IPMC member do it"

Who can do this?

-- 
Hendrik Saly (salyh, hendrikdev22)
@hendrikdev22
PGP: 0x22D7F6EC