confine.lib: confine_sliver_deploy fixing failed template deployment
Makefile: add CONFIG_GDB and gdbserver to node system
confine/*.lua: remove configuration cruft from RestAPI (issue #239)
    TestbedParams.priv_ipv4_prefix_dflt     removed, default set as /etc/config/confine: confine.node.priv_ipv4_prefix24='192.168.241'
    TestbedParams.sliver_mac_prefix_dflt    removed, default set as /etc/config/confine: confine.node.mac_prefix16='54:c0'
    Node.local_iface                        removed, default set as /etc/config/confine: confine.node.local_ifname='eth0'
    Node.priv_ipv4_prefix                   removed, see TestbedParams.priv_ipv4_prefix_dflt
    Node.sliver_mac_prefix                  removed, see TestbedParams.sliver_mac_prefix_dflt
    Node.sliver_pub_ipv[46] (also see #46)  removed, default set as /etc/config/confine: confine.node.sl_public_ipv4_proto='dhcp'
    Node.sliver_pub_ipv4_range              removed, default set as /etc/config/confine: confine.node.public_ipv4_avail='8'
confine/*.lua: better logging of exception traces
confine: add node@node/addrs (issue #237)