Update to cpp-common module
Merge pull request #12 from Metaswitch/submodule_update

[No reviewer] Update to cpp-common module
Update cpp-common
Merge pull request #13 from Metaswitch/submodule

[No reviewer] Update cpp-common
Change HTTP port to 10888 to avoid conflict with Sprout
Merge pull request #14 from Metaswitch/http_port

[Reviewer: Andy] Change HTTP port to 10888 to avoid conflict with Sprout
Update cpp-common
Merge pull request #16 from Metaswitch/sub_update

[No reviewer] Update cpp-common