changed serval-dna version from batphone-release-0.91 to commotion-wireless

[dismantl]

To test:

build two nodes with the image, and ensure app advertising works and that one node can ping the other using servald.

Also enable olsrd-mdp and ensure the nodes have routes to each other.

Also also, check the memory usage of serval-dna. The memory leak fix probably won't make a difference, but it's worth checking.

If you would like images to test, I have them already built, just come find me.

[dismantl]

olsrd-mdp can be tested using this config block:

LoadPlugin "olsrd_mdp.so.0.1" {
    PlParam "sid" "A6D29C35D0409F176B22AEF2FAC447572540F39D8AEB8C48C107F9A11D224B06"
    PlParam "servalpath" "/etc/commotion/keys.d/mdp"
}

[dismantl]

or the corresponding block for /etc/config/olsrd:

config LoadPlugin
    option sid 'A6D29C35D0409F176B22AEF2FAC447572540F39D8AEB8C48C107F9A11D224B06'
    option servalpath '/etc/commotion/keys.d/mdp'

[dismantl]

@gradyoti confirmed app advertising still works, we just need confirmation of olsrd-mdp functioning (requires this fix: https://github.com/opentechinstitute/olsrd/pull/14).

[areynold]

olsrd config above is missing the library path ('option library olsrd_mdp.so.0.1'). Otherwise works as described.

Tested by areynold and hawkinswnaf