fix files_external storage id migration
fix files_external storage id migration

bluelml/core,endsguy/server,IljaN/core,owncloud/core,owncloud/core,xx621998xx/server,pollopolea/core,cernbox/core,lrytz/core,whitekiba/server,jbicha/server,owncloud/core,pmattern/server,nextcloud/server,jbicha/server,endsguy/server,bluelml/core,IljaN/core,pixelipo/server,lrytz/core,bluelml/core,michaelletzgus/nextcloud-server,bluelml/core,cernbox/core,xx621998xx/server,andreas-p/nextcloud-server,pmattern/server,Ardinis/server,pmattern/server,IljaN/core,pixelipo/server,andreas-p/nextcloud-server,pixelipo/server,lrytz/core,pixelipo/server,andreas-p/nextcloud-server,lrytz/core,michaelletzgus/nextcloud-server,andreas-p/nextcloud-server,sharidas/core,Ardinis/server,Ardinis/server,endsguy/server,endsguy/server,pollopolea/core,owncloud/core,cernbox/core,xx621998xx/server,whitekiba/server,jbicha/server,pollopolea/core,owncloud/core,cernbox/core,Ardinis/server,sharidas/core,pixelipo/server,andreas-p/nextcloud-server,pmattern/server,IljaN/core,pmattern/server,bluelml/core,lrytz/core,IljaN/core,xx621998xx/server,jbicha/server,pollopolea/core,nextcloud/server,nextcloud/server,xx621998xx/server,sharidas/core,cernbox/core,michaelletzgus/nextcloud-server,whitekiba/server,sharidas/core,pollopolea/core,whitekiba/server,endsguy/server,michaelletzgus/nextcloud-server,phil-davis/core,whitekiba/server,sharidas/core,jbicha/server,Ardinis/server,nextcloud/server