Improved unit test for "overwrite on move"
Improved unit test for "overwrite on move"

Now using a different content to make sure the file was overwritten.

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