OSDOCS-6191-2 adding Israel Central

Author: bscott-rh

modules/installation-azure-regions.adoc

@@ -28,6 +28,7 @@ The installation program dynamically generates the list of available Microsoft A
 * `francecentral` (France Central)
 //* francesouth (France South)
 * `germanywestcentral` (Germany West Central)
+* `israelcentral` (Israel Central)
 * `italynorth` (Italy North)
 * `japaneast` (Japan East)
 * `japanwest` (Japan West)