Description of problem:
virt-manager cannot open graphic of a remote guest with listen='127.0.0.1' after configure spice_password 

Version-Release number of selected component (if applicable):
libvirt-2.0.0-10.el7_3.2.x86_64
virt-manager-1.4.0-2.el7.noarch

How reproducible:
100%

Steps to Reproduce:
1.Prepare a guest on hostA, with default spice graphic:
    <graphics type='spice' autoport='yes'/>

2.Start the guest, check its xml by dumpxml:
    <graphics type='spice' port='5900' autoport='yes' listen='127.0.0.1'>
      <listen type='address' address='127.0.0.1'/>
    </graphics>

3.On hostB, open virt-manager, connect to hostA by adding a remote connection:
      File -> Add Connection -> Hypervisor(QEMU/KVM) -> Enable "Connect to remote host" -> MEthod(SSH) -> Username (root) -> Hostname(hostA's IP) ->Click 'connect'

4.In virt-manager, double-click the running guest in the remote connection with hostA, open window for the guest, type spice_password and login, check the display.
    Result: virt-manager can open the graphic of guest normally, user can interact with guest sucessfully.

5.On hostA: Configure spice_password, restart libvirtd.
#vim /etc/libvirt/qemu.conf
spice_password = "XYZ12345"
#service libvirtd restart

6.On hostB: close and reopen virt-manager, connect the connection with hostA, destroy then start the guest again, repeat step4, check the display.

7.On hostA: edit the xml changing listen address to be "listen=0.0.0.0";
On hostB:destroy then start the guest again, repeat step4, check the display.
    Result: Same as step4.


Actual results:
1.In step6, virt-manager cannot open graphic of the guest with listen='127.0.0.1' after configure spice_password, meanwhile even the guests with only vnc graphic cannot be opened too.
2.For log of "virt-manager --debug" and the screenshot of the guest, pls refer to the attachments.

Expected results:
virt-manager should be able to open the graphic of guest normally, user can interact with guest sucessfully, just as the result in step4. listen address should not affects.

Additional info:
1.It exists on both rhel7.3 and rhel6.9.
2.Cannot reproduce by virt-viewer:
#virt-viewer -c qemu+ssh://hostB_IP/system guest
3.Cannot reproduce when use virt-manager to open local guest.