[0.22.0] Update datamodel

Following https://pfspipe.ipmu.jp/jira/browse/DAMD-92?focusedCommentId=21648&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-21648
RedshiftCandidates is reviewed on following points :

• get the content of the user json parameter file (if given)
• Add CRPIX, CRCAL, CD from PfsObject in header