Add regions-zones mapping doc to book (#602)

Signed-off-by: Prajyot-Parab <[email protected]>

Author: Prajyot-Parab

docs/book/src/SUMMARY.md

@@ -17,4 +17,5 @@
   - [Guide for API conversions](./developer/conversion.md)
   - [Release Process](./developer/release.md)
 - [Troubleshooting](./user/troubleshooting.md)
-- [Reference](./reference/reference.md)
+- [Reference](./reference/reference.md)
+  - [Regions-Zones Mapping](./reference/regions-zones-mapping.md)

docs/book/src/getting-started.md

@@ -50,6 +50,8 @@ it into a management cluster using `clusterctl`.
     export SERVICE_ENDPOINT=https://us-south.iaas.cloud.ibm.com/v1
     ```
 
+    Note: Refer [Regions-Zones Mapping](/reference/regions-zones-mapping.html) for more information.
+
 3. Initialize local bootstrap cluter as a management cluster
     
     When executed for the first time, the following command accepts the infrasturcture provider as an input to install. `clusterctl init` automatically adds to the list the cluster-api core provider, and if unspecified, it also adds the kubeadm bootstrap and kubeadm control-plane providers, thereby converting it into a management cluster which will be used to provision a workload cluster in IBM Cloud.   

docs/book/src/reference/regions-zones-mapping.md

@@ -0,0 +1,16 @@
+# Regions-Zones Mapping
+
+| powervs regions | powervs zones      | powervs service endpoint URL (public) | ibmcloud_vpc regions | ibmcloud_vpc zones                     | vpc service endpoint URL (public) |
+|:---------------:|:------------------:|:-------------------------------------:|:--------------------:|:--------------------------------------:|:---------------------------:|
+| dal             | dal12              | dal.power-iaas.cloud.ibm.com          | us-south             | us-south-1<br>us-south-2<br>us-south-3 | us-south.iaas.cloud.ibm.com |
+| eu-de           | eu-de-1<br>eu-de-2 | eu-de.power-iaas.cloud.ibm.com        | eu-de                | eu-de-1<br>eu-de-2<br>eu-de-3          | eu-de.iaas.cloud.ibm.com       |
+| lon             | lon04<br>lon06     | lon.power-iaas.cloud.ibm.com          | eu-gb                | eu-gb-1<br>eu-gb-2<br>eu-gb-3          | eu-gb.iaas.cloud.ibm.com       |
+| mon             | mon01              | mon.power-iaas.cloud.ibm.com          | -                    | -                                      | -                            |
+| osa             | osa21              | osa.power-iaas.cloud.ibm.com          | jp-osa               | jp-osa-1<br>jp-osa-2<br>jp-osa-3       | jp-osa.iaas.cloud.ibm.com       |
+| sao             | sao01              | sao.power-iaas.cloud.ibm.com          | br-sao               | br-sao-1<br>br-sao-2<br>br-sao-3       | br-sao.iaas.cloud.ibm.com       |
+| syd             | syd04<br>syd05     | syd.power-iaas.cloud.ibm.com          | au-syd               | au-syd-1<br>au-syd-2<br>au-syd-3       | au-syd.iaas.cloud.ibm.com       |
+| tok             | tok04              | tok.power-iaas.cloud.ibm.com          | jp-tok               | jp-tok-1<br>jp-tok-2<br>jp-tok-3       | jp-tok.iaas.cloud.ibm.com       |
+| tor             | tor01              | tor.power-iaas.cloud.ibm.com          | ca-tor               | ca-tor-1<br>ca-tor-2<br>ca-tor-3       | ca-tor.iaas.cloud.ibm.com       |
+| wdc             | wdc06              | wdc.power-iaas.cloud.ibm.com          | us-east              | us-east-1<br>us-east-2<br>us-east-3    | us-east.iaas.cloud.ibm.com       |
+| us-east         | us-east            | us-east.power-iaas.cloud.ibm.com      | us-east              | us-east-1<br>us-east-2<br>us-east-3    | us-east.iaas.cloud.ibm.com       |
+| us-south        | us-south           | us-south.power-iaas.cloud.ibm.com     | us-south             | us-south-1<br>us-south-2<br>us-south-3 | us-south.iaas.cloud.ibm.com |

docs/book/src/topics/vpc/creating-a-cluster.md

@@ -33,6 +33,8 @@ following the steps below.
     kubeadmconfigtemplate.bootstrap.cluster.x-k8s.io/ibm-vpc-5-md-0 created
     ```
 
+    Note: Refer [Regions-Zones Mapping](/reference/regions-zones-mapping.html) for more information.
+
 2. Deploy Container Network Interface (CNI)
 
     Example: calico