Move cockpit-auth-miq to manageiq-appliance repo

This doesn't need to live here, it isn't tested, doesn't use our
models and moving it removes a few AVC denials when running cockpit-ws

https://bugzilla.redhat.com/show_bug.cgi?id=1779988

lib/miq_cockpit.rb

@@ -115,7 +115,7 @@ def web_ui_url
     def update_config
       title = @opts[:title] || "ManageIQ Cockpit"
 
-      login_command = Rails.root.join("tools", "cockpit", "cockpit-auth-miq")
+      login_command = File.join("/usr", "bin", "cockpit-auth-miq")
 
       @config = <<-END_OF_CONFIG
 [Webservice]

spec/lib/miq_cockpit_spec.rb

@@ -104,15 +104,11 @@
   end
 
   describe 'update_config' do
-    before do
-      @login_command = Rails.root.join("tools", "cockpit", "cockpit-auth-miq")
-    end
-
     context "when using empty opts" do
       it "it uses defaults" do
         ins = MiqCockpit::WS.new(nil)
         config = ins.update_config
-        expect(config).to include("\n[SSH-Login]\ncommand = #{@login_command}\n")
+        expect(config).to include("\n[SSH-Login]\ncommand = /usr/bin/cockpit-auth-miq\n")
         expect(config).to include("\n[Basic]\nAction = none\n")
         expect(config).to include("\n[Negotiate]\nAction = none\n")
         expect(config).to include("\nLoginTitle = ManageIQ Cockpit\n")