Node check for 3f+1 SSV committee [COPIED]

[AmitaiBlox]

[Originally posted by @alonmuroch]

For an SSV network to be safe it needs 3f+1 members. We should enforce it as a minimum.

@lior-blox

[AmitaiBlox]

[Originally posted by @lior-blox]

should be on IBFT part

[AmitaiBlox]

Copied from https://github.com/bloxapp/ssv/issues/44

[liorrutenberg]

We need to restrict

• threshold to be 2f+1
• shares 3f+1 Need to validate in 2 places: a. on threshold create command b. on validator created/registered

1. on threshold generation