Use HTTPS instead of HTTP to resolve dependencies

This fixes a security vulnerability in this project where the `pom.xml`
files were configuring Maven to resolve dependencies over HTTP instead of
HTTPS.

Signed-off-by: Jonathan Leitschuh <Jonathan.Leitschuh@gmail.com>
Closes #37

maven-archetype-plugin/src/test/projects/simple-inheritence/pom.xml

@@ -111,7 +111,7 @@
       </releases>
       <id>codehaus.snapshots</id>
       <name>Codehaus Snapshot Development Repository</name>
-      <url>http://snapshots.repository.codehaus.org</url>
+      <url>https://snapshots.repository.codehaus.org</url>
     </repository>
   </repositories>