Use full file paths in config

Stop hard coding the file paths for logs and TLS certs to directories
within the svmp-server source directory. Restores old behavior of
treating those config file entries as full file paths so the certs and
logs can be placed anywhere in the file system, like in /var and /etc.

Change-Id: If55b1d755af763496f8696bf49e3ff2354bf8f9d
Fix parsing errors in example config file

Change-Id: Ic443139a72bbfaa0dc439c60767a6be4c5c7cbff