LDAP: sanitize user and group base trees for strripos comparison. fixes oc-1302
LDAP: sanitize user and group base trees for strripos comparison. fixes oc-1302

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