Add testcontainers as a dependency of test-common

While we probably want to be a lot more clever about it, it's the
easiest way to have it in the test classpath and thus being allowed to
load it parent first.

test-framework/common/pom.xml

@@ -34,6 +34,21 @@
             <groupId>commons-io</groupId>
             <artifactId>commons-io</artifactId>
         </dependency>
+        <!-- This makes Testcontainers part of the test classpath, allowing us to load it parent first -->
+        <dependency>
+            <groupId>org.testcontainers</groupId>
+            <artifactId>testcontainers</artifactId>
+            <exclusions>
+                <exclusion>
+                    <groupId>junit</groupId>
+                    <artifactId>junit</artifactId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+        <dependency>
+            <groupId>io.quarkus</groupId>
+            <artifactId>quarkus-junit4-mock</artifactId>
+        </dependency>
         <!-- Needed for RestAssured -->
         <dependency>
             <groupId>org.jboss.logging</groupId>