Change Requires to Wants phosphor-ipmi-host

phosphor-ipmi-net would fail to start with missing dependencies when
phosphor-ipmi-host failed to start, and phosphor-ipmi-net would not
restart in that case.

Similar change for kcsbridge in
https://gerrit.openbmc.org/c/openbmc/kcsbridge/+/53987

Change-Id: I42d179159c6e3e51db7cf5404ec5cd464083add6
Signed-off-by: Anthony <anthonyhkf@google.com>
diff --git a/phosphor-ipmi-net@.service b/phosphor-ipmi-net@.service
index 0f944ab..c3ea0a0 100644
--- a/phosphor-ipmi-net@.service
+++ b/phosphor-ipmi-net@.service
@@ -1,6 +1,6 @@
 [Unit]
 Description=Network IPMI daemon
-Requires=phosphor-ipmi-host.service
+Wants=phosphor-ipmi-host.service
 After=phosphor-ipmi-host.service
 Requires=sys-subsystem-net-devices-%i.device
 After=sys-subsystem-net-devices-%i.device