Closes #3 - not duplicate IT test run

Failsafe plugin has matured so that it does not need executions, just
adding the plugin to `pom.xml` "does the right thing".

pom.xml

@@ -263,22 +263,6 @@
                         <version>${junit.jupiter.version}</version>
                     </dependency>
                 </dependencies>
-                <executions>
-                    <execution>
-                        <id>run-integration-tests</id>
-                        <phase>integration-test</phase>
-                        <goals>
-                            <goal>integration-test</goal>
-                        </goals>
-                    </execution>
-                    <execution>
-                        <id>run-verify</id>
-                        <phase>verify</phase>
-                        <goals>
-                            <goal>verify</goal>
-                        </goals>
-                    </execution>
-                </executions>
             </plugin>
             <plugin>
                 <groupId>org.springframework.boot</groupId>