Upgrade rspec dependency 2.13.0 -> 2.14.1

Fixed some deprecation warnings in the process.

Change-Id: I7a3e10068850e66428d819fe1d89fd4208547e71
Reviewed-on: http://gerrit.causes.com/36175
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Shane da Silva <shane@causes.com>