firmware: confs. for a better performance of RPL routing protocol.

[luisan00]

Contribution description

A few C flags allow alternative parents and add space for increasing the number of nodes network nodes.

Testing procedure

Number of alternative parents, is set to 2, so the minimum setup needs at least 3 nodes:

• 2 as DODAG, build and flash mesh4all_rpl_dodag
• 1 as DAG, build and flash mesh4all_rpl_dag

Turn on all nodes and make sure the two DODAG nodes are using different IPV6 addresses.
Open a terminal on the DAG node and verify that it can use alternative parents.

Using zep create a network at least of 50 nodes acting as DAG and only one as dodag, turn all nodes on.
The DODAG node should show you 50 entries, it correspond to 50 DAG nodes in the network

Issues/PRs references

None

[CW-75]

This looks good for me, IMO is a good idea announce that only is supported the storing mode and all its limitations, also it's better knows to the nib storage limit and do it settable . Good job 👍

testing procedure

[CW-75]

👍

[CW-75]

👍