meta-phosphor: use obmc-phosphor-user for qemu systems

Yocto 2.1 can't seem to find the original reference package
obmc-phosphor-userd.  obmc-phosphor-user is a full implementation
that works on qemu, so we will use it.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
diff --git a/meta-phosphor/conf/machine/include/sample.inc b/meta-phosphor/conf/machine/include/sample.inc
index b499940..e4d70d1 100644
--- a/meta-phosphor/conf/machine/include/sample.inc
+++ b/meta-phosphor/conf/machine/include/sample.inc
@@ -30,4 +30,4 @@
 PREFERRED_PROVIDER_virtual/obmc-phosphor-policy-mgmt = "obmc-phosphor-policyd"
 PREFERRED_PROVIDER_virtual/obmc-phosphor-sensor-mgmt = "obmc-phosphor-sensord"
 PREFERRED_PROVIDER_virtual/obmc-phosphor-system-mgmt = "obmc-phosphor-sysd"
-PREFERRED_PROVIDER_virtual/obmc-phosphor-user-mgmt = "obmc-phosphor-userd"
+PREFERRED_PROVIDER_virtual/obmc-phosphor-user-mgmt = "obmc-phosphor-user"