ssa.c: Improved some warning log messages in ssa_upstream_handle_op

Signed-off-by: Hal Rosenstock <hal@mellanox.com>
core.c: Cosmetic formatting change

Signed-off-by: Hal Rosenstock <hal@mellanox.com>
Update flow for distrib node

Prepare to update and Ready for update messages added
prior to DB update message.

A number of debug log messages were left in for now.

Combined node is not yet supported with update flow
as update flow for access thread to be added later.

Signed-off-by: Hal Rosenstock <hal@mellanox.com>
ssa.c: In ssa_upstream_handler, use define rather than hard coded constant

Add define for UPSTREAM_DATA_FD_SLOT for upstream data connection slot
in fds array

Signed-off-by: Hal Rosenstock <hal@mellanox.com>