17344: Update bundle usage.

17344: Update bundle usage.

[DEPRECATED] The `--deployment` flag is deprecated because it relies
on being remembered across bundler invocations, which bundler will no
longer do in future versions. Instead please use `bundle config set
--local deployment 'true'`, and stop using this flag
[DEPRECATED] The `--path` flag is deprecated because it relies on
being remembered across bundler invocations, which bundler will no
longer do in future versions. Instead please use `bundle config set
--local path '/var/www/.gem'`, and stop using this flag
[DEPRECATED] The `--without` flag is deprecated because it relies on
being remembered across bundler invocations, which bundler will no
longer do in future versions. Instead please use `bundle config set
--local without 'development test diagnostics performance'`, and stop
using this flag

Arvados-DCO-1.1-Signed-off-by: Tom Clegg <tom@curii.com>