Fix spurious permissions
Merge pull request #219 from Metaswitch/fix_permissions

[No review required] Fix spurious permissions
Improve SAS logging
Merge pull request #220 from Metaswitch/sprout-iss872

[Reviewer: Ellie] Improve SAS logging
Merge branch 'master' of github.com:Metaswitch/cpp-common into iss211