This new test launches a small network composed by 4 OSPF routers with
Traffic Engineering and Segment Routing configuration. To assess the Link
State Traffic Engineering feature, the TED of each router is compared
against the reference TED which corresponds to the network topology.
Then a series of 6 steps, where Link, TE & SR configurations are modified
up to r4 shutwdown, are used to verify that the TED is correctly updated
on the 4 routers.
Signed-off-by: Olivier Dugeon <olivier.dugeon@orange.com>