cmd/swarm: make bzzaccount flag optional and add bzzkeyhex flag (#1531)

* cmd/swarm: don't require bzzaccount flag

* docker: remove setup script because bzzaccount is not required anymore

* cmd/swarm: manage account creation/selection when bzzflag is not defined

* cmd/swarm: no bzzaccount flag tests

* cmd/swarm: use random network ports on tests

* cmd/swarm: fix typo

* cmd/swarm: add --bzzkeyhex flag

* cmd/swarm: use different ipc paths for tests

* readme: update example on how to run swarm

* cmd/swarm: rename getAccount -> getOrCreateAccount

* cmd/swarm: remove unneeded comment

* cmd/swarm: use shorter ipc path for test

cmd/swarm/access.go

@@ -106,7 +106,7 @@ func accessNewPass(ctx *cli.Context) {
 		accessKey []byte
 		err       error
 		ref       = args[0]
-		password  = getPassPhrase("", 0, makePasswordList(ctx))
+		password  = getPassPhrase("", false, 0, makePasswordList(ctx))
 		dryRun    = ctx.Bool(SwarmDryRunFlag.Name)
 	)
 	accessKey, ae, err = api.DoPassword(ctx, password, salt)