refactor(calendar): replace deprecated ngOutletContext

[chunghha]

Use ngTemplateOutletContext instead.

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?

[ ] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[X] 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?

My test app using ng-zorro-antd is compiled OK with Angular 5.0.0-beta.5 but not started, because the beta version removed deprecated ngOutletContext which is currently used in the calendar module, even though the module is not used from my app.

Error: Template parse errors:
Can't bind to 'ngOutletContext' since it isn't a known property of 'ng-template'.

1. If 'ngOutletContext' is an Angular directive, then add 'CommonModule' to the '@NgModule.imports' of this component.
2. To allow any property add 'NO_ERRORS_SCHEMA' to the '@NgModule.schemas' of this component. (" *ngIf="dateCell"
   [ngTemplateOutlet]="dateCell"
   [ERROR ->][ngOutletContext]="{ $implicit: day}">
   
   <"): ng:///NzCalendarModule/NzCalendarComponent.html@79:26

Issue Number: N/A

What is the new behavior?

With this commit, expect that the error above disappears when my app starts.

Does this PR introduce a breaking change?

[ ] Yes
[X] No

Other information

[coveralls]

Coverage remained the same at 40.348% when pulling 052ade6 on chunghha:template into e861e58 on NG-ZORRO:master.