Pagination: when the [(total)] has a initial 0 value, will emit a nzPageIndexChange event

[xcorpio]

I'm submitting a Bug

[ *] Bug report  
[ ] Feature request
[ ] Documentation issue or request
[ ] Regression (a behavior that used to work and stopped working in a new release)
[ ] Support request => Please do not submit support request here

Current behavior

<nz-pagination [(nzPageIndex)]="_current" [nzTotal]="total" [nzSize]="'small'" nzShowTotal (nzPageIndexChange)="load()"></nz-pagination>

when the total is initialized in my component like this

  ...
  total = 0
  _current = 1

It will emit a nzPageIndexChange event.

Expected behavior

I think the nzPageIndexChange event may only be triggerd by click event expect value changed in code

Minimal reproduction of the problem with instructions

What is the motivation / use case for changing the behavior?

logically

Environment

Angular version: 4.3.0

ng-zorro-antd version: ^0.5.0-rc.4

Browser:
- [* ] Chrome (desktop) version 60.0.3112.113
- [ ] Firefox version XX
- [ ] Safari (desktop) version XX
- [ ] IE version XX
 
For Tooling issues:
- Node version: v8.4.0  
- Platform:  Mac 

Others:

[wilsoncook]

resolved by #281 , pls pay an attention to the next release, or may using master branch if emergency

[lock]

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