functional-tests: Use latest version of splinter
splinter 0.13.0 has a bug which is fixed in 0.14.0
See https://github.com/cobrateam/splinter/pull/749
Signed-off-by: Joseph Nuthalapati njoseph@riseup.net
splinter 0.13.0 has a bug which is fixed in 0.14.0
See https://github.com/cobrateam/splinter/pull/749
Signed-off-by: Joseph Nuthalapati njoseph@riseup.net