Add mock validation

src/test/groovy/pl/touk/mockserver/client/ControlServerClient.groovy

@@ -26,7 +26,7 @@ class ControlServerClient {
                 throw new MockAlreadyExists()
 
             }
-            throw new InvalidMockDefinitionException(responseXml.text())
+            throw new InvalidMockDefinition(responseXml.text())
         }
     }
 

src/test/groovy/pl/touk/mockserver/client/InvalidMockDefinition.groovy

@@ -5,8 +5,8 @@ import groovy.transform.TypeChecked
 
 @CompileStatic
 @TypeChecked
-class InvalidMockDefinitionException extends RuntimeException {
-    InvalidMockDefinitionException(String s) {
+class InvalidMockDefinition extends RuntimeException {
+    InvalidMockDefinition(String s) {
         super(s)
     }
 }