Setting jrubyVersion for embedding in the topology jar gets overwritten

[rtyler]

adding the dependency jruby-complete 1.7.22 to jar
unzipping /home/tyler/.gradle/caches/modules-2/files-2.1/org.jruby/jruby-complete/1.7.22/42dc9be2f706774c24ef61ec2981d05e2c79a9e2/jruby-complete-1.7.22.jar in the jar
unzipping /home/tyler/.gradle/caches/modules-2/files-2.1/org.jruby.mains/jruby-mains/0.4.0/c767732c802c52592a949b57e68023e66b8b860e/jruby-mains-0.4.0.jar in the jar
task ':jrubyJar' including files in /home/tyler/source/lookout/REDACTED/build/dirinfo/jrubyJar
adding the dependency jruby-complete 1.7.21 to jar
unzipping /home/tyler/.gradle/caches/modules-2/files-2.1/org.jruby/jruby-complete/1.7.21/e061b9f399a5e8d5cfcca84d4a6baf879111e83c/jruby-complete-1.7.21.jar in the jar
unzipping /home/tyler/.gradle/caches/modules-2/files-2.1/org.jruby.mains/jruby-mains/0.4.0/c767732c802c52592a949b57e68023e66b8b860e/jruby-mains-0.4.0.jar in the jar
task ':assembleJRubyStorm' including files in /home/tyler/source/lookout/REDACTED/build/dirinfo/jrubyJar

Looks like my attempt to set a default version to 1.7.21 as a baseline didn't work :(