'ws://' is currently hardcoded within the spice_auto.html file included
in the packaged release of spice-html5, raising a security error when
accessing consoles over HTTPS.
Remove the existing apt package and install spice-html5 from source
instead since this issue has been corrected as of spice-html5-0.1.6.
Change-Id: Ie308a477143037963f903f2ac21b2b1f0328fcb3
Partial-Bug: #1424797