Amazon Aurora AWS + Bedrock content_type keyword reservation

[ernestmarcinko]

Describe the bug

See ticket.

The 'pagepost' as content_type within the main search queries throws a weird error on some amazon AWS Aurora + Bedrock installations, saying that content_type is now a mysql reserved keyword - which is not the case. Based on this similar issue rerport, apparently Bedrock is adding this.

Todo

• Escape content_type fields in all search files within the Search directory
• As a good measure do the rest of the fields too