Update cpp-common for multiple diameter connections support
Merge pull request #524 from Metaswitch/sto639

Update cpp-common for multiple diameter connections support
Update cpp-common for multiple diameter connections support (attempt 2)
Merge pull request #525 from Metaswitch/sto639

Update cpp-common for multiple diameter connections support (attempt 2)
Initialise dummy_ttl
Merge pull request #526 from Metaswitch/sto639

Initialise dummy_ttl