odhcpd: update to latest git HEAD (FS#2019)

e73bf11 config: ra_management compatibility support
d818380 odhcpd: router: Fix out of scope memory access
94a1c94 dhcpv6-ia: free assignment when validity timer expires
752fc2c router: speed up initial router advertisements
09aa022 router: close socket upon NETEV_IFINDEX_CHANGE fixed
79eb160 router: fix previous commit
6034b5c router: close socket upon NETEV_IFINDEX_CHANGE
000182f router: fix lingering uloop socket descriptor
f6c2242 router: support ra_lifetime being 0
d111809 router: make RA flags configurable (FS#2019)

Update odhcpd defaults according to the new RA flags implementation

Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>