Pick up freeDiameter config file when collecting diags
Make timeout configurable
Updates after review
Merge pull request #100 from Metaswitch/iss79

[Reviewer: Alex] Make timeout configurable
Update cpp-common
Code review feedback
Merge pull request #99 from Metaswitch/diameter_diags

[Reviewer: Alex] Pick up freeDiameter config file when collecting diags
Fixes #102 - Homestead doesn't include ClearwaterRegData element in response to PUT for authentication failure
Fix up UTs
Merge pull request #103 from Metaswitch/issue102

[Reviewer Rob] Fixes #102 - Homestead doesn't include ClearwaterRegData element in response to PUT for authentication failure
Update cpp-common
Merge pull request #104 from Metaswitch/issue541

Update cpp-common