Design document for KVM daemon

Design document for KVM daemon which is needed by the instance
shutdown detection for KVM.
Signed-off-by: Jose A. Lopes <jabolopes@google.com>
Reviewed-by: Michele Tartara <mtartara@google.com>

Makefile.am

@@ -531,6 +531,7 @@ docinput = \
 	doc/design-hugepages-support.rst \
 	doc/design-impexp2.rst \
 	doc/design-internal-shutdown.rst \
+	doc/design-kvmd.rst \
 	doc/design-linuxha.rst \
 	doc/design-lu-generated-jobs.rst \
 	doc/design-monitoring-agent.rst \

doc/index.rst

@@ -116,6 +116,7 @@ Draft designs
    design-device-uuid-name.rst
    design-hroller.rst
    design-hotplug.rst
+   design-kvmd.rst
    design-linuxha.rst
    design-lu-generated-jobs.rst
    design-monitoring-agent.rst