Add support for power supply off when it should be on

If the power good bit indicates false, or the UNIT_IS_OFF bit is on,
create an error log and attach STATUS_WORD, STATUS_INPUT, STATUS_VOUT,
STATUS_IOUT, and MFR_SPECIFIC values to the metadata. The combination of
those PMBus command results should give an indication as to why the
power supply has turned off.

Change-Id: I692a8fdeac3fe208a5eb70964db7b5094cfb587c
Signed-off-by: Brandon Wyman <bjwyman@gmail.com>
diff --git a/xyz/openbmc_project/Power/Fault.metadata.yaml b/xyz/openbmc_project/Power/Fault.metadata.yaml
index 184fffa..1615734 100644
--- a/xyz/openbmc_project/Power/Fault.metadata.yaml
+++ b/xyz/openbmc_project/Power/Fault.metadata.yaml
@@ -8,6 +8,13 @@
   meta:
     - str: "RAW_STATUS=%s"
       type: string
+- name: PowerSupplyShouldBeOn
+  level: ERR
+  meta:
+    - str: "RAW_STATUS=%s"
+      type: string
+  inherits:
+    - xyz.openbmc_project.Common.Callout.Inventory
 - name: Shutdown
   level: ERR