feat (remove key from commonPipelineEnvironment) (#4074)

* Add method to remove values from commonPipelineEnvironment

* Add test to validate remove value from map

Co-authored-by: i850487 <thilaknath.ashok.kumar@sap.com>

test/groovy/CommonPipelineEnvironmentTest.groovy

@@ -51,6 +51,14 @@ class CommonPipelineEnvironmentTest extends BasePiperTest {
         assertThat(nullScript.commonPipelineEnvironment.getValue('myList').key2, is('val2'))
     }
 
+    @Test
+    void testKeyRemoveFromMap() {
+        nullScript.commonPipelineEnvironment.setValue('myList', [])
+        nullScript.commonPipelineEnvironment.getValue('myList').add('item1')
+        nullScript.commonPipelineEnvironment.removeValue('myList')
+        assertThat(nullScript.commonPipelineEnvironment.getValue('myList'), is(null))
+    }
+
     @Test
     void testContainereMap() {
         nullScript.commonPipelineEnvironment.setContainerProperty('image', 'myImage')

vars/commonPipelineEnvironment.groovy

@@ -66,6 +66,10 @@ class commonPipelineEnvironment implements Serializable {
         valueMap[property] = value
     }
 
+    void removeValue(String property) {
+        valueMap.remove(property)
+    }
+
     def getValue(String property) {
         return valueMap.get(property)
     }