(maint) Stop notifying haus on new release tickets

The jira text of one of the release tickets mentions haus by
[~matthaus], which creates a jira notification for any set of release
tickets created by this process. This is undesirable. This commit
updates the text to just reference Haus instead.
Merge pull request #330 from haus/maint/master/stop_notifying_me_please

(maint) Stop notifying haus on new release tickets