Silence security_group_buildpack curl output
Silence security_group_buildpack curl output

[#102933448]

Signed-off-by: Natalie J. Bennett <e5fc036b158c983344048075b2b1e5c6083fede5@pivotal.io>

matt-royal/cf-acceptance-tests,matt-royal/cf-acceptance-tests,matt-royal/cf-acceptance-tests,matt-royal/cf-acceptance-tests,matt-royal/cf-acceptance-tests,matt-royal/cf-acceptance-tests,matt-royal/cf-acceptance-tests,matt-royal/cf-acceptance-tests