Eclipse Common Build Infrastructure Maven Plugins 1.1.4

This is a maintenance release. The most visible changes are the requirement of Java 8 and the new capability to sign DMG files (macOS specific files). 

The documentation is available at https://www.eclipse.org/cbi/maven-plugins/documentation/1.1.4/ (and also available from the aliases https://www.eclipse.org/cbi/maven-plugins/documentation/latest/ and https://www.eclipse.org/cbi/sitedocs/)

Other changes:

• Plugins now require to be run with Maven 3.3.1 and Java 8
• Update Maven plugins to latest versions
• Update Jetty dependency to Jetty to 9.4.1 (for testing)

Fixed bugs:

• Bug 507453 - Add connection timeout parameter for jarsigner
• Bug 507453 - Set default timeout to 20secs
• Bug 507453 - Default timeout for HTTP request should be infinite (0)
• Bug 512019 - Add mandatory 'log' property to RetryHttpClient
• Bug 512019 - NPE on non required parameters
• Bug 512489 - Add DMG signing capability to DMG Packager