Clear selected nodes at the beginning of each of the MainWindowTreeTests to prevent test failures due to artifacts leftover from a previous test.
Clear selected nodes at the beginning of each of the MainWindowTreeTests to prevent
test failures due to artifacts leftover from a previous test.

Signed-off-by: Konstantina Chremmou <a7d1f757a659045fb6db8c1e3849a1c8ad00b97a@citrix.com>

MihaelaStoica/xenadmin,cheng--zhang/xenadmin,GaborApatiNagy/xenadmin,letsboogey/xenadmin,jijiang/xenadmin,huizh/xenadmin,cheng-z/xenadmin,huizh/xenadmin,stephen-turner/xenadmin,Frezzle/xenadmin,qlw/xenadmin,GaborApatiNagy/xenadmin,xenserver/xenadmin,kc284/xenadmin,jijiang/xenadmin,robhoes/xenadmin,minli1/xenadmin,Frezzle/xenadmin,agimofcarmen/xenadmin,ushamandya/xenadmin,huizh/xenadmin,ushamandya/xenadmin,cheng--zhang/xenadmin,geosharath/xenadmin,letsboogey/xenadmin,Frezzle/xenadmin,letsboogey/xenadmin,minli1/xenadmin,MihaelaStoica/xenadmin,Frezzle/xenadmin,kc284/xenadmin,GaborApatiNagy/xenadmin,stephen-turner/xenadmin,stephen-turner/xenadmin,letsboogey/xenadmin,minli1/xenadmin,geosharath/xenadmin,agimofcarmen/xenadmin,kc284/xenadmin,robhoes/xenadmin,letsboogey/xenadmin,MihaelaStoica/xenadmin,cheng-z/xenadmin,letsboogey/xenadmin,robhoes/xenadmin,huizh/xenadmin,jijiang/xenadmin,Frezzle/xenadmin,geosharath/xenadmin,geosharath/xenadmin,cheng--zhang/xenadmin,cheng-z/xenadmin,ushamandya/xenadmin,jijiang/xenadmin,cheng-z/xenadmin,GaborApatiNagy/xenadmin,qlw/xenadmin,qlw/xenadmin,huizh/xenadmin,ushamandya/xenadmin,cheng--zhang/xenadmin,stephen-turner/xenadmin,qlw/xenadmin,geosharath/xenadmin,GaborApatiNagy/xenadmin,xenserver/xenadmin,geosharath/xenadmin,minli1/xenadmin,GaborApatiNagy/xenadmin,stephen-turner/xenadmin,robhoes/xenadmin,cheng-z/xenadmin,jijiang/xenadmin,stephen-turner/xenadmin,huizh/xenadmin,agimofcarmen/xenadmin,jijiang/xenadmin,MihaelaStoica/xenadmin,cheng--zhang/xenadmin,minli1/xenadmin,Frezzle/xenadmin,kc284/xenadmin,MihaelaStoica/xenadmin,cheng-z/xenadmin,kc284/xenadmin,ushamandya/xenadmin,robhoes/xenadmin,agimofcarmen/xenadmin,cheng--zhang/xenadmin,qlw/xenadmin,agimofcarmen/xenadmin,robhoes/xenadmin,minli1/xenadmin,xenserver/xenadmin,MihaelaStoica/xenadmin,ushamandya/xenadmin