change pipeline backend format

Exercise-Configuration.md

@@ -147,7 +147,7 @@ Mandatory items are bold, optional italic, description of items follows:
 * **tests** - ...
     * **${test identification}** - ...
         * **pipelines** - ...
-            * **${pipeline identification}** - ...
+            * **name** - ...
             * **variables** - ...
                 * **${variable identification}** - ...
                     * **type** - ...
@@ -155,7 +155,7 @@ Mandatory items are bold, optional italic, description of items follows:
         * **environments** - ...
             * **${environment identification}** - ...
                 * **pipelines** - ...
-                    * **${pipeline identification}** - ...
+                    * **name** - ...
                     * **variables** - ...
                         * **${variable identification}** - ...
                             * **type** - ...
@@ -170,7 +170,7 @@ environments:
 tests:
   "Test 1":
     pipelines:
-      "pipeline1":
+      - name: pipeline1
         variables:
           varA:
             type: string
@@ -178,7 +178,7 @@ tests:
     environments:
       java8:
         pipelines:
-          "pipelineJava":
+          - name: pipelineJava
             variables:
               varJava:
                 type: string
@@ -186,7 +186,7 @@ tests:
       cpp11: []
   "Test 2":
     pipelines:
-      "pipeline2":
+      - name: pipeline2
         variables:
           varB:
             type: file
@@ -194,7 +194,7 @@ tests:
     environments:
       cpp11:
         pipelines:
-          "pipeline2":
+          - name: pipeline2
             variables:
               varCpp:
                 type: file