lime-sdk develop branch should point to libremesh-packages master branch

[p4u]

lime-sdk/feeds.conf.default

Line 6 in 6d1bc02

src-git libremesh https://github.com/libremesh/lime-packages.git;17.06

Is there a reason why lime-sdk develop branch points to libremesh 17.06 instead of Master? @aparcar @ilario @G10h4ck @nicopace