* implements weighted round robin in init-sync
* protection against evil peer
* reshuffle
* shorten flag
* deterministic order of wrr
* Merge branch 'master' into init-sync-wrr
* Merge refs/heads/master into init-sync-wrr
* Merge refs/heads/master into init-sync-wrr
* allow peers with the same capacity to pe selected at random
* Merge branch 'init-sync-wrr' of github.com:prysmaticlabs/prysm into init-sync-wrr
* adds wrr to e2e tests
* Merge refs/heads/master into init-sync-wrr
* Merge refs/heads/master into init-sync-wrr
* Merge refs/heads/master into init-sync-wrr
* refactor ReceiveBlockNoPubsub to receive block root
* Refactor ReceiveBlock to receive block root
* A few other minor refactoring to reduce block HTR
* use arg, remove HTR
* more slight refactoring, comments
* fix test build
* Merge refs/heads/master into receive-with-root
* Merge refs/heads/master into receive-with-root