ACCUMULO-2646 Move example config generation to script

  An external script is a bit cleaner than calling bash inline in the pom.xml
Merge branch '1.6.1-SNAPSHOT'
ACCUMULO-2956 Make bootstrap_config work on Mac

  Based on patch submitted to ACCUMULO-2646 by [~bhavanki]
Merge branch '1.6.1-SNAPSHOT'
ACCUMULO-2957 Exclude binary test resource from rat check

  Ensure test walog resource is excluded from rat check on systems, such as Mac
  OS X, that do not correctly detect the file as a binary file
Merge branch '1.6.1-SNAPSHOT'