Bump github.com/prometheus/client_golang from 0.9.2 to 0.9.4#7

dependabot-preview[bot] wants to merge 1 commit intomasterOpenstack-projects/opensds:masterfrom

dependabot/go_modules/github.com/prometheus/client_golang-0.9.4Openstack-projects/opensds:dependabot/go_modules/github.com/prometheus/client_golang-0.9.4Copy head branch name to clipboard