Why submit this pr:

    we have suffered from infinite loop in addrbook bug which takes us a long time to find out why process become a zombie peer. It have been fixed in #3232. But the ADDRS_LOOP is still there, risk of infinite loop is still exist.
    The algorithm that to random pick a bucket is not stable, which means the peer may unluckily always choose the wrong bucket for a long time, the time and cpu cost is meaningless.

A simple improvement:
shuffle bucketsNew and bucketsOld, and pick necessary number of address from them. A stable
algorithm.

Fixes https://circleci.com/gh/tendermint/tendermint/44901

* failing test

* fix infinite loop in addrbook

There are cases where we only have a small number of addresses marked
good ("old"), but the selection mechanism keeps trying to select more of these
addresses, and hence ends up in an infinite loop. Here we fix this to
only try and select such "old" addresses if we have enough of them. Note this
means, if we don't have enough of them, we may return more "new"
addresses than otherwise expected by the newSelectionBias.

This whole GetSelectionWithBias method probably needs to be rewritten,
but this is a quick fix for the issue.

* changelog

* fix infinite loop if not enough new addrs

* fix another potential infinite loop

if a.nNew == 0 -> pickFromOldBucket=true, but we don't have enough items
  (a.nOld > len(oldBucketToAddrsMap) false)

* Revert "fix another potential infinite loop"

This reverts commit 146540c112.

* check num addresses instead of buckets, new test

* fixed the int division

* add slack to bias % in test, lint fixes

* Added checks for selection content in test

* test cleanup

* Apply suggestions from code review

Co-Authored-By: ebuchman <ethan@coinculture.info>

* address review comments

* change after  Anton's review comments

* use the same docker image we use for testing

when building a binary for localnet

* switch back to circleci classic

* more review comments

* more review comments

* refactor addrbook_test

* build linux binary inside docker

in attempt to fix

```
--> Running dep
+ make build-linux
GOOS=linux GOARCH=amd64 make build
make[1]: Entering directory `/home/circleci/.go_workspace/src/github.com/tendermint/tendermint'
CGO_ENABLED=0 go build -ldflags "-X github.com/tendermint/tendermint/version.GitCommit=`git rev-parse --short=8 HEAD`" -tags 'tendermint' -o build/tendermint ./cmd/tendermint/
p2p/pex/addrbook.go:373:13: undefined: math.Round
```

* change dir from /usr to /go

* use concrete Go version for localnet binary

* check for nil addresses just to be sure

* p2p/pex: Allow configured seed nodes to be offline

Previously you couldn't startup tendermint if a seed node was offline.
This now allows you to startup tendermint, as long as all seed node addresses
are formatted correctly. In the event that all seed nodes are down,
and the address book is empty, then it crashes with an informative error msg.
(This case doesn't occur if no seeds were specified)

Closes #1716

* (Squash this) Address melekes' comments

* (squash this) fix package imports

* (squash this) fix pex_reactor comment

* (squash this) add a test case

Refs #1706

Currently the top level directory contains basically all of the code
for the crypto package. This PR moves the crypto code into submodules
in a similar manner to what `golang/x/crypto` does. This improves code
organization.

Ref discussion: https://github.com/tendermint/tendermint/pull/1966

Closes #1956

* Add private peer ID tracking to AddrBook

* Remove private peer tracking/blocking from pex

* debug level msg when we fail to add private address

This commit switches all usage of math/rand to cmn's rand. The only
exceptions are within the random file itself, the tools package, and the
crypto package. In tools you don't want it to lock between the go-routines.
The crypto package doesn't use it so the crypto package have no other
dependencies within tendermint/tendermint for easier portability.

Crypto/rand usage is unadjusted.

Closes #1343

This reverts commit d02c5d1e30.

This reverts commit 96a3502

also, remove address from the book (plus mark it as our address)
and return an error if we fail to parse peers list

Refs #1130

after discussion with @ebuchman (https://github.com/tendermint/go-p2p/pull/10#discussion_r96471729)