Add quiesce to host state

Updated Host.yaml and README file to include the
host quiesce state

Change-Id: I44fb8849ee5adf1209de1af4720fd95b848950ad
Signed-off-by: Saqib Khan <khansa@us.ibm.com>
diff --git a/xyz/openbmc_project/State/Host.interface.yaml b/xyz/openbmc_project/State/Host.interface.yaml
index a5e95e8..7d3447f 100644
--- a/xyz/openbmc_project/State/Host.interface.yaml
+++ b/xyz/openbmc_project/State/Host.interface.yaml
@@ -42,3 +42,6 @@
         - name: 'Running'
           description: >
             Host firmware is running
+        - name: 'Quiesced'
+          description: >
+            Host firmware is quiesced
diff --git a/xyz/openbmc_project/State/README.md b/xyz/openbmc_project/State/README.md
index 05f5a55..2e0bc00 100644
--- a/xyz/openbmc_project/State/README.md
+++ b/xyz/openbmc_project/State/README.md
@@ -21,10 +21,13 @@
 it's required target (Ready) or it's on it's way there (NotReady).  Users can
 request a (Reboot).
 
-2. *Host* : The host is either (Off), or it's (Running).
+2. *Host* : The host is either (Off), (Running), or it's (Quiesced).
 Running simply implies that the processors are executing instructions.  Users
 can request the host be in a (Off), (On), or (Reboot) state.  More details on
 different Reboot options below.
+Quiesced means the host OS is in a quiesce state and the system should be
+checked for errors. For more information refer to
+(Error Handling of systemd)[https://github.com/openbmc/docs/blob/master/openbmc-systemd.md#error-handling-of-systemd]
 
 3. *Chassis* : The chassis is either (Off) or (On)
 This represents the state of power to the chassis.  The Chassis being on