ExchangeRepositoryConnector: fix replyMessageAttachment
<field name="sp_site" type="string" indexed="true" stored="true" multiValued="false"/>
<field name="sp_item" type="string" indexed="true" stored="true" multiValued="false"/>
+ <!-- O365 fields -->
+ <field name="o365_attachments" type="string" indexed="true" stored="true" multiValued="true"/>
+
+
<!-- Common metadata fields, named specifically to match up with
SolrCell metadata when parsing rich documents such as Word, PDF.
Some fields are multiValued only because Tika currently may return
