Issue #662: Adding support for 15g servers

Signed-off-by: cgoveas <cassandra.goveas@dell.com>

docs/README.md

@@ -61,7 +61,7 @@ The following table lists the supported devices managed by Omnia. Other devices
 
 Device type	|	Supported models	
 -----------	|	-------	
-Dell EMC PowerEdge Servers	|	PowerEdge C4140, C6420, R240, R340, R440, R540, R640, R740, R740xd, R740xd2, R840, R940, R940xa
+Dell EMC PowerEdge Servers	|	PowerEdge C4140, C6420, C6520, R240, R340, R440, R540, R640, R650, R740, R740xd, R740xd2, R750, R750xa, R840, R940, R940xa
 Dell EMC PowerVault Storage	|	PowerVault ME4084, ME4024, and ME4012 Storage Arrays
 Dell EMC Networking Switches	|	PowerSwitch S3048-ON and PowerSwitch S5232F-ON
 Mellanox InfiniBand Switches	|	NVIDIA MQM8700-HS2F Quantum HDR InfiniBand Switch 40 QSFP56

examples/host_inventory_file

@@ -1,21 +1,16 @@
 all: 
   children:
-    cluster:
-      children:
-        manager:
-          hosts:
-            manager.omnia.local:
-        nfs_node:
-          hosts:
-            manager.omnia.local:
-        login_node:
-          hosts:
-            login1.omnia.local:
-        workers:
-          children:
-            compute:
-              hosts:
-                compute001.omnia.local;
-                compute002.omnia.local;
-                compute003.omnia.local;
-                compute004.omnia.local;
+    manager:
+      hosts:
+        manager.omnia.local:
+    nfs_node:
+      hosts:
+        storage.omnia.local:
+    login_node:
+      hosts:
+        login1.omnia.local:
+    compute:
+      hosts:
+        compute[001-004].omnia.local:
+        compute010.omnia.local:
+        compute011.omnia.local: