Read auth keys file from config

spec/gitlab_keys_spec.rb

@@ -20,7 +20,7 @@ describe GitlabKeys do
     end
 
     it "should receive valid cmd" do
-      valid_cmd = "echo 'command=\"#{ROOT_PATH}/bin/gitlab-shell key-741\",no-port-forwarding,no-X11-forwarding,no-agent-forwarding,no-pty ssh-rsa AAAAB3NzaDAxx2E' >> /home/git/.ssh/authorized_keys"
+      valid_cmd = "echo 'command=\"#{ROOT_PATH}/bin/gitlab-shell key-741\",no-port-forwarding,no-X11-forwarding,no-agent-forwarding,no-pty ssh-rsa AAAAB3NzaDAxx2E' >> {GitlabConfig.new.auth_file}"
       @gl_keys.should_receive(:system).with(valid_cmd)
       @gl_keys.send :add_key
     end
@@ -33,7 +33,7 @@ describe GitlabKeys do
     end
 
     it "should receive valid cmd" do
-      valid_cmd = "sed -i '/key-741/d' /home/git/.ssh/authorized_keys"
+      valid_cmd = "sed -i '/key-741/d' {GitlabConfig.new.auth_file}"
       @gl_keys.should_receive(:system).with(valid_cmd)
       @gl_keys.send :rm_key
     end