Added FAQ for ingress issue (#69)

* Added FAQ for ingress issue - story mojaloop/helm#196

deployment-guide/deployment-troubleshooting.md

@@ -5,6 +5,7 @@
 ### 1.1. `ERR_NAME_NOT_RESOLVED` Error
 
 #### Description
+
 The following error is displayed when attempting to access an end-point (e.g. central-ledger.local) via the Kubernetes Service directly in a browser: `ERR_NAME_NOT_RESOLVED`
 
 #### Fixes
@@ -20,3 +21,35 @@ The following error is displayed when attempting to access an end-point (e.g. ce
   * Ensure that all the Mojaloop Pods/Containers have started up correctly and are available through the Kubernetes dashboard.
 
   * Note that the Mojaloop deployment via Helm can take a few minutes to initially startup depending on the system's available resources and specification. It is recommended that you wait at least 10m for all Pods/Containers to self heal before troubleshooting.
+
+
+## 2. Ingress issues
+
+### 2.1. Ingress rules are not resolving for Nginx Ingress v0.22 or later
+
+#### Description
+
+Ingress rules are unable to resolve to the correct path based on the annotations specified in the values.yaml configuration files when using Nginx Ingress controllers v0.22 or later.
+
+This is due to the changes introduced in Nginx Ingress controllers that are v0.22 or later as per the following link: https://kubernetes.github.io/ingress-nginx/examples/rewrite/#rewrite-target.
+
+#### Fixes
+
+  * Make the following change to all Ingress annotations (from --> to) in each of the values.yaml files:
+
+    `nginx.ingress.kubernetes.io/rewrite-target: '/'` --> `nginx.ingress.kubernetes.io/rewrite-target: '/$1'`
+
+
+### 2.2. Ingress rules are not resolving for Nginx Ingress earlier than v0.22
+
+#### Description
+
+Ingress rules are unable to resolve to the correct path based on the annotations specified in the values.yaml configuration files when using Nginx Ingress controllers that are older than v0.22.
+
+This is due to the changes introduced in Nginx Ingress controllers that are v0.22 or later as per the following link: https://kubernetes.github.io/ingress-nginx/examples/rewrite/#rewrite-target.
+
+#### Fixes
+
+  * Make the following change to all Ingress annotations (from --> to) in each of the values.yaml files:
+
+    `nginx.ingress.kubernetes.io/rewrite-target: '/$1'` --> `nginx.ingress.kubernetes.io/rewrite-target: '/'`