Update steps_to_enable_OPSI_ExaCC.md

step zero OPSI for exacc

Author: NicolaCimitile

manageability-and-operations/observability-and-manageability/operations-insights/LZ-addons/files/steps_to_enable_OPSI_ExaCC.md

@@ -10,6 +10,17 @@
 </tr>
 <tr>
 
+<td align="left">0</td>
+<td align="left">
+Please ensure you have the OCI Operating Entities Landing Zone deployed 
+
+ [info here](https://github.com/oracle-devrel/technology-engineering/tree/main/landing-zones)
+
+<td align="left"> 
+</td>
+</tr>
+<tr>
+
 <td align="left" >1</td>
 <td align="left">