UC-1548: Create resource-limits.ini as a central config for fd and core limits

Also fixed task: AdminConfig.replicate is never called

-generic approach: admin settings page sets defaults for proxy, rls, registrar, saa, park, mwi resource limits
each process outlined above can set its own resource limits on their settings page.
Any time admin settings can overwrite the resource limits for all outlined processes above

test added
UC-1378:  Adding OsResourceLimit files
UC-1378:  Removed unresolved define of RTTIME.  It is not supported on CentOS 6
UC-1378:  This patch introduces OsResourceLimit which allows application to set the FD limit and enabling of core file generation using /etc/sipxpbx/resource-limits.ini configuration file.  The following applications are modified to implement this during startup.

sipXproxy
sipXpublisher
sipXrls
sipXregistry
sipXpark/src
sipXsaa
- merged OsServiceOptions with Joegen changes