Alarms/Announcements are not sent if display date is in the past

Whenever display date < now - interval there are no notification emails sent out. I found this code which seems to be the reason:
https://github.com/liferay/liferay-portal/blob/master/portal-impl/src/com/liferay/portlet/announcements/service/impl/AnnouncementsEntryLocalServiceImpl.java#L130

As this is current master trunk it also affects Liferay 6.2.X.

In line 134 (https://github.com/liferay/liferay-portal/blob/master/portal-impl/src/com/liferay/portlet/announcements/service/impl/AnnouncementsEntryLocalServiceImpl.java#L134) it fetches announcements by display date which is clearly wrong because the user can manipulate the display date in any kind. Here you need to use the creation date of the announcement, as it can't be changed by the user. The modification date would also be an option, if notifications should also be send after a change of an existing announcement.

Blocked by LPS-35628

PASSED Manual Testing using the following steps:

1. Open portal-ext.properties, add announcements.entry.check.interval=1 and following to the file :

       announcements.email.from.name=liferay.qa1
       announcements.email.from.address=liferay.qa1@gmail.com
   
       announcements.email.to.name=liferay.qa2
       announcements.email.to.address=liferay.qa2@gmail.com
   
       announcements.email.subject=com/liferay/portlet/announcements/dependencies/email_subject.tmpl
       announcements.email.body=com/liferay/portlet/announcements/dependencies/email_body.tmpl
   

2. Login an Admin user
3. Click My Account and click Display Setting
4. Make sure that Admin user is set to the correct Time zone under Display Setting category matching the time zone on your computer.
5. Click Announcements under Miscellaneous.
6. Select all the email option and save.
7. Go to control panel and set up mail server in the Server Administration.
8. Back to liferay.com and add Announcement portlet to a page
9. Click on "Manage Entries" tab.
10. Click on "Add Entry" button.
11. Verify that Display Date displays current time (the same as your computer).
12. Populate Title field and Content section.
13. Waiting 1 minute and then click on Save button.

Reproduced on:
Tomcat 7.0 + MySQL 5. Portal 6.1.x 6.1.20 EE GA2.

Alarms/Announcements are not sent if display date is in the past.

Fixed on:
Tomcat 7.0 + MySQL 5. Portal 6.1.x EE GIT ID: 4b656be2d9b9bba35f13bec9304ba1eeb291a73d.
Tomcat 7.0 + MySQL 5. Portal 6.2.x GIT ID: 3decc66ba8f797d0e63c1fd82f74e2ff854fb753.

You can receive a notification email.