update syncthing and verify it's working [unstable]

[xmonader]

• make sure to revisit the builder for syncthing
• make sure it works correctly

[Hamdy]

Syncthing is working, However I had to upgrade golang ot version 1.14 rather than 1.12.x

[Hamdy]

Also another issue I encountered, was when running as a root , it gives warning, then stops first time then run correctly again, so I updated builder to add new user called syncthing and ran the server from that user

Another issue, is it can not run in tmux in proper way sincce tmux uses something like exec -a startupcmd_{cmd} cmd {args} which does not work with syncthing that assumes that the first argument number 0 passed to it is the same exact name as the binary name so startupcmd_syncthing now passed as (0) argument by exec will not work, so I renamed the binary to startupcmd_syncthing which is a workaround, not the best thing, but I don't think we have many of usecases like this any way!

here's the commit : https://github.com/threefoldtech/jumpscaleX_builders/commit/68c3df301baea7a0aefdd2acc577782763abde27

[Hamdy]

To verify : j.builders.storage.syncthing.test

[Dina-Abd-Elrahman]

• verified.