all: add default log file if none are defined

all: add default log file if none are defined

Added a default log file named /var/log/quagga/Quagga.log to every daemon
to capture log entries if no log file is defined.  This also allows the
capture of logged information prior to reading each daemon's config file.
If a log file is defined manually, it will override this default file name.

Ticket: CM-10987
Signed-off-by: Don Slice
Reviewed By: Donald Sharp
Testing Done: Manual testing