Merge pull request #396 from spring-operator

* pr/396:
  URL Cleanup

pom.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xmlns="http://maven.apache.org/POM/4.0.0"
-  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/maven-v4_0_0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <groupId>org.springframework.samples</groupId>
   <artifactId>spring-petclinic</artifactId>