rename oauth config variable in sso tests
rename oauth config variable in sso tests

Signed-off-by: Alvaro Perez-Shirley <79f29b890b0238cfb202ad154c4598ac29519534@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