Use http liquibase XSDs

Update the lquibase test to use `http://` rather than `https://` so that
it can be resolved from the local jar.

spring-boot-project/spring-boot-autoconfigure/src/test/resources/db/changelog/db.changelog-override.xml

@@ -3,8 +3,8 @@
         xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns:ext="http://www.liquibase.org/xml/ns/dbchangelog-ext"
-        xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog https://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.0.xsd
-        http://www.liquibase.org/xml/ns/dbchangelog-ext https://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-ext.xsd">
+        xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.8.xsd
+        http://www.liquibase.org/xml/ns/dbchangelog-ext http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-ext.xsd">
 
     <changeSet id="1" author="marceloverdijk">
         <createTable tableName="customer">

src/checkstyle/nohttp-whitelist.txt

@@ -7,3 +7,4 @@
 ^http://spockframework.org.*
 ^http://ganglia.sourceforge.net.*
 ^http://schemas.xmlsoap.org.*
+^http://www.liquibase.org/xml/ns/dbchangelog/.*