add and rebalancing a node fails in the first attempt in 2.0 ({gen_fsm,sync_send_event,2}, {menelaus_web,do_handle_rebalance,3}

1) Create a 3 node cluster
2) Select any one of them as master
3) Add other nodes to this master
4) Rebalance.

From the AdminLog:-
Server error during processing: ["web request failed",

{path,"/controller/rebalance"}

,

{type,exit}

,
{what,
{noproc,
{gen_fsm,sync_send_event,
[

{global,ns_orchestrator}

,

{start_rebalance, ['ns_1@10.1.6.39','ns_1@10.1.6.38', 'ns_1@10.1.6.40'], [],[]}

]}}},
{trace,
[

{gen_fsm,sync_send_event,2}

,

{menelaus_web,do_handle_rebalance,3}

,

{menelaus_web,loop,3}

,

{mochiweb_http,headers,5}

,

From the diagnostic report.

[

{registered_name,[]}

,

{status,waiting}

,
{initial_call,{proc_lib,init_p,5}},
{backtrace,
[<<"Program counter: 0x03dd4aa8 (gen_fsm:loop/7 + 152)">>,
<<"CP: 0x00000000 (invalid)">>,<<"arity = 0">>,<<>>,
<<"0x0473468c Return addr 0x01595750 (proc_lib:init_p_do_apply/3 + 28)">>,
<<"y(0) []">>,<<"y(1) infinity">>,
<<"y(2) mc_daemon">>,
<<"(3)

{state,<<7 bytes>>,true,0,nil,[],100,undefined,0,8,<0.3723.1>,nil,[],#Port<0.14666">>, <<"y(4) processing">>,<<"y(5) <0.3722.1>">>, <<"y(6) <0.3721.1>">>,<<>>, <<"0x047346ac Return addr 0x01223c44 (<terminate process normally>)">>, <<"y(0) Catch 0x01595760 (proc_lib:init_p_do_apply/3 + 44)">>, <<>>]}

,