fix(module:pagination): fix nzPageIndexChange event does not emit

[SangKa]

Fix #171

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/CONTRIBUTING.md#commit
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[x] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Documentation content changes
[ ] Application (the showcase website) / infrastructure changes
[ ] Other... Please describe:

What is the current behavior?

Issue Number: #171

What is the new behavior?

In the nzShowQuickJumper and nzSimple model, nzPageIndexChange event can emit as normal.

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

[coveralls]

Coverage decreased (-0.002%) to 40.346% when pulling 98f95da on SangKa:fix-171 into 29a5cbf on NG-ZORRO:master.

[xiaodiao1212]

@vthinkxie hello, my br. When I use the paging component，the bug still exist！my [email protected]。Can you give me an explanation？ I didn't find this fixed@171 when I checking the source code！

[vthinkxie]

@xiaodiao1212 please provide repro link and submit a issue.
The pr is for 0.6.x version and all code are totally rewrite in 0.7.0.

[xiaodiao1212]

@vthinkxie You just using [email protected].