introduce EnableMockOperator annotation

Author: s-soroosh

operator-framework-spring-boot-starter-test/src/main/java/io/javaoperatorsdk/operator/springboot/starter/test/EnableMockOperator.java

@@ -0,0 +1,12 @@
+package io.javaoperatorsdk.operator.springboot.starter.test;
+
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import org.springframework.context.annotation.Import;
+
+@Retention(RetentionPolicy.RUNTIME)
+@Import(TestConfiguration.class)
+public @interface EnableMockOperator {
+
+}