Update docs/examples with "replicas" directly under "executor".

Author: razvan

docs/modules/spark-k8s/examples/example-history-app.yaml

@@ -32,5 +32,4 @@ spec:
               credentials:
                 secretClass: history-credentials-class # <6>
   executor:
-    config:
-      replicas: 1
+    replicas: 1

docs/modules/spark-k8s/examples/example-sparkapp-configmap.yaml

@@ -25,8 +25,8 @@ spec:
         - name: cm-job-arguments # <6>
           mountPath: /arguments  # <7>
   executor:
+    replicas: 3
     config:
-      replicas: 3
       volumeMounts:
         - name: cm-job-arguments # <6>
           mountPath: /arguments # <7>

docs/modules/spark-k8s/examples/example-sparkapp-external-dependencies.yaml

@@ -29,8 +29,8 @@ spec:
         - name: job-deps
           mountPath: /dependencies  # <6>
   executor:
+    replicas: 3
     config:
-      replicas: 3
       volumeMounts:
         - name: job-deps
           mountPath: /dependencies  # <6>

docs/modules/spark-k8s/examples/example-sparkapp-image.yaml

@@ -35,8 +35,8 @@ spec:
         memory:
           limit: "1Gi"
   executor:
+    replicas: 3
     config:
-      replicas: 3
       resources:
         cpu:
           min: "1"

docs/modules/spark-k8s/examples/example-sparkapp-pvc.yaml

@@ -27,8 +27,8 @@ spec:
         - name: job-deps
           mountPath: /dependencies # <5>
   executor:
+    replicas: 3
     config:
-      replicas: 3
       volumeMounts:
         - name: job-deps
           mountPath: /dependencies # <5>

docs/modules/spark-k8s/examples/example-sparkapp-s3-private.yaml

@@ -22,5 +22,4 @@ spec:
     spark.driver.extraClassPath: "/dependencies/jars/hadoop-aws-3.2.0.jar:/dependencies/jars/aws-java-sdk-bundle-1.11.375.jar"
     spark.executor.extraClassPath: "/dependencies/jars/hadoop-aws-3.2.0.jar:/dependencies/jars/aws-java-sdk-bundle-1.11.375.jar"
   executor:
-    config:
-      replicas: 3
+    replicas: 3

docs/modules/spark-k8s/examples/example-sparkapp-streaming.yaml

@@ -25,8 +25,8 @@ spec:
         memory:
           limit: "1Gi"
   executor:
+    replicas: 1
     config:
-      replicas: 1
       resources:
         cpu:
           min: "1700m"