ExtractorMojo - prints all <configuration> values.
ExtractorMojo - old properties are eliminated + code cleanup.
ExtractorMojoHelper - supports "{EXPR}" and "{A|B|C}" expressions when values are replaced with env. variables or system properties.
ArtifactoryClientConfiguration.java + ClientConfigurationFields.java - changes reverted
ExtractorMojoProperties + @Property removed
ExtractorMojoHelper cosmetics.
ExtractorMojoHelper cosmetics.
ExtractorMojoHelper cosmetics.
Merge pull request #7 from evgeny-goldin/master

Old properties removed, all <configuration>s are dumped with "-X", {A|B|C} expressions (no dollar needed + OR)