Merge branch 'drop-unicorn-support' into 'master'

Remove Unicorn references

Closes #81

See merge request gitlab-org/gitlab-exporter!142

config/gitlab-exporter.yml.example

@@ -78,8 +78,6 @@ probes:
     opts:
       - pid_or_pattern: "sidekiq .* \\[.*?\\]"
         name: sidekiq
-      - pid_or_pattern: "unicorn.* worker\\[.*?\\]"
-        name: unicorn
       - pid_or_pattern: "git-upload-pack --stateless-rpc"
         name: git_upload_pack
         quantiles: true

lib/gitlab_exporter/cli.rb

@@ -217,7 +217,7 @@ module GitLab
             opts.on("--pid=123", "Process ID") do |val|
               @pid = val
             end
-            opts.on("--pattern=unicorn", "Process command pattern") do |val|
+            opts.on("--pattern=worker", "Process command pattern") do |val|
               @pattern = val
             end
             opts.on("--name=NAME", "Process name to be used in metrics") do |val|