Update test/install_script/nvm_install_with_node_version to use nvm ls 8 instead of grep!
Update test/install_script/nvm_install_with_node_version to use nvm ls 8 instead of grep!

edwmurph/nvm,edwmurph/nvm,evocateur/nvm,creationix/nvm,ljharb/nvm,ljharb/nvm,PeterDaveHelloKitchen/nvm,PeterDaveHello/nvm,PeterDaveHello/nvm,PeterDaveHelloKitchen/nvm,creationix/nvm,evocateur/nvm