ambassador 2: update mapping template to reflect 2.0.4 changes (#184)

* Ambassador2 removed AmbassadorMapping in exchange for Mapping as of Version 2.0.4

* ambassador: change API from x.getambassador.io/v3alpha1 to getambassador.io/v3alpha1

Co-authored-by: George Dobrovolsky <georgy.dobrovolsky@gmail.com>

docs/ambassador2.md

@@ -26,7 +26,7 @@ Flags:
  -h, --help
 ```
 
-The Ambassador generator generates [AmbassadorMapping]s (https://www.getambassador.io/docs/edge-stack/2.0/topics/using/intro-mappings/) resources for mapping resource to services. All options that can be set via 
+The Ambassador generator generates [Mapping]s (https://www.getambassador.io/docs/edge-stack/2.0/topics/using/intro-mappings/) resources for mapping resource to services. All options that can be set via 
 flags can also be set using our `x-kusk` OpenAPI extension in your specification.
 
 CLI flags apply only at the global level i.e. applies to all paths and methods.
@@ -44,7 +44,7 @@ To override settings on the path or HTTP method level, you are required to use t
 | Path Base | --path.base | path.base | Prefix for your resource routes | ❌ |
 | Path Trim Prefix | --path.trim_prefix | path.trim_prefix | Trim the specified prefix from URl before passing request onto service | ❌ |
 | Path split | --path.split | path.split | Boolean; whether or not to force generator to generate a mapping for each path | ❌ |
-| Host | --host | host | The value to set the host field to in the AmbassadorMapping resource | ✅ |
+| Host | --host | host | The value to set the host field to in the Mapping resource | ✅ |
 | Rate limit (RPS) | --rate_limits.rps | rate_limits.rps | Request per second rate limit | ✅ |
 | Rate limit (burst) | --rate_limits.burst | rate_limits.burst | Rate limit burst | ✅ |
 | Rate limit group | N/A | rate_limits.group | Rate limit endpoint group | |
@@ -167,7 +167,7 @@ paths:
 ```yaml
 ---
 apiVersion: x.getambassador.io/v3alpha1
-kind: AmbassadorMapping
+kind: Mapping
 metadata:
  name: booksapp
  namespace: booksapp
@@ -228,7 +228,7 @@ paths:
 ```yaml
 ---
 apiVersion: x.getambassador.io/v3alpha1
-kind: AmbassadorMapping
+kind: Mapping
 metadata:
  name: booksapp-get
  namespace: booksapp
@@ -240,7 +240,7 @@ spec:
  rewrite: ""
 ---
 apiVersion: x.getambassador.io/v3alpha1
-kind: AmbassadorMapping
+kind: Mapping
 metadata:
  name: booksapp-postbooks
  namespace: booksapp
@@ -304,7 +304,7 @@ paths:
 ```yaml
 ---
 apiVersion: x.getambassador.io/v3alpha1
-kind: AmbassadorMapping
+kind: Mapping
 metadata:
  name: booksapp
  namespace: booksapp
@@ -368,7 +368,7 @@ paths:
 ```yaml
 ---
 apiVersion: x.getambassador.io/v3alpha1
-kind: AmbassadorMapping
+kind: Mapping
 metadata:
  name: booksapp
  namespace: booksapp
@@ -426,7 +426,7 @@ paths:
 ```yaml
 ---
 apiVersion: x.getambassador.io/v3alpha1
-kind: AmbassadorMapping
+kind: Mapping
 metadata:
  name: webapp
  namespace: booksapp
@@ -505,7 +505,7 @@ paths:
 ```yaml
 ----
 apiVersion: x.getambassador.io/v3alpha1
-kind: AmbassadorMapping
+kind: Mapping
 metadata:
  name: webapp-get
  namespace: booksapp
@@ -528,7 +528,7 @@ spec:
  max_age: "86400"
 ---
 apiVersion: x.getambassador.io/v3alpha1
-kind: AmbassadorMapping
+kind: Mapping
 metadata:
  name: webapp-postbooks
  namespace: booksapp