Release 1.5.2.1

Changes since Release 1.5.2.0

• Bumped version to 1.5.2.1-SNAPSHOT
• Upgraded wrensec-parent to the latest release (3.0.1)
• Upgraded wrensec-commons to the latest release (22.0.0)
• Upgraded slf4j to 1.7.23 (same version is used in the wrensec-commons)
• Fixed PGP verification for dependencies of openicf-zip module