Inventory test suite

Added support for following:
   - Suite Setup
   - Keywords to support test
   - Add test "Verify System Inventory"
   - Add test "Verify Chassis Motherboard Properties"

Resolves openbmc/openbmc-test-automation#260

Change-Id: Ieb8c2c7b9bdb3102cdb05e19441d3e3c595f6ed3
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/data/variables.py b/data/variables.py
index ab6ab98..a597165 100644
--- a/data/variables.py
+++ b/data/variables.py
@@ -43,6 +43,9 @@
 SOFTWARE_VERSION_URI = '/xyz/openbmc_project/software/'
 ACTIVE = 'xyz.openbmc_project.Software.Activation.Activations.Active'
 
+# Inventory URI
+HOST_INVENTORY_URI = '/xyz/openbmc_project/inventory/'
+
 '''
   QEMU HTTPS variable: