packaging: setup: database: support ':' within password

at least in rhel postgresql 8.4 the pgpassfile is not read according to
documentation, the password is read as plain, postgresql 9 seems to
respect the documentation.

this behavior is handled by client side postgresql libraries, the
simplest way to detect what library we use is to query psql utility
version.

[1] http://www.postgresql.org/docs/8.4/static/libpq-pgpass.html

Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=1064428
Change-Id: I866680c853c1e1978d55828ff4efd710a1003f9a
Signed-off-by: Alon Bar-Lev <alonbl@redhat.com>