BugFix - Add old outgoing type names for earlier integration tests spreadsheet

[Obsiye]

BugFix

Add old outgoing type names for earlier integration tests spreadsheet

This fixes an error in sentry "ArgumentError Invalid type: outgoings_childcare" instead of outgoings_child_care sent by the master uat branch in Apply

childcare, housing_costs and maintenance type names are retained for compatibility with earlier versions of integration test spreadsheet

Please see in the OutgoingsCreator class under OUTGOING_KLASSES

Checklist

Before you ask people to review this PR:

• Tests and rubocop should be passing: bundle exec rake
• Github should not be reporting conflicts; you should have recently run git rebase master.
• There should be no unnecessary whitespace changes. These make diffs harder to read and conflicts more likely.
• The PR description should say what you changed and why, with a link to the JIRA story.
• You should have looked at the diff against master and ensured that nothing unexpected is included in your changes.
• You should have checked that the commit messages say why the change was made.

[colinbruce]

Nice catch and fix
Maybe create an issue pointing to this PR so that we can come back to it... unless you are going to fix it almost immediately?! 😄