Missed pjutils update when updating cpp-common
Merge pull request #651 from Metaswitch/cpp_update2

[No reviewer] Missed pjutils update when updating cpp-common
Fix up dependency on std::queue
Merge remote-tracking branch 'origin/dev' into issue624
Pull in refactored sas-client to avoid eventq template clash
Merge pull request #652 from Metaswitch/sas_refactor

[No reviewer required] SAS client refactor to avoid clash in eventq.h
UT the HttpResolver
Merge remote-tracking branch 'origin/dev' into issue624
Take cpp-common master