(SERVER-29) Set JARS_NO_REQUIRE='true' on scripting containers.

JARS_NO_REQUIRE is an environment variable which, if set to `true`, will prevent
the loading of embedded jars using the `require_jar` method of the
`jar-dependencies` gem.

This is required to ensure that jruby-openssel, which is loaded by the JRuby
Kernel whenever ruby code requires `openssl`, does not attempt to load embedded
bouncy castle jars onto the classpath. The effect is to ensure that
jruby-openssl uses the bouncycastle included as a requirement of
jvm-certificate-authority rather than the version included with JRuby, as well
as preventing jvm-ceritificate-authority from using JRuby's bouncycastle.