software/seleniumserver: add support for headless-chromium SR

This adds the new headless Chromium shell as a browser option. There was
some discussion on the headless-chromium merge request about whether we
want to do this (see
nexedi/slapos!1014 (comment 139023)),
particularly since it slows down the seleniumserver compilation by a
lot.

This commit includes the patches mentioned in that discussion.

software/seleniumserver/buildout.hash.cfg

@@ -19,4 +19,4 @@ md5sum = 0084214fae4ee1aad2c878aa393757af
 
 [template-selenium]
 filename = instance-selenium.cfg.in
-md5sum = 884196ea35de35fa9159517912441ce6
+md5sum = 3bd82740a08fd9c0187390716b8fbb43

software/seleniumserver/instance-selenium.cfg.in

@@ -133,6 +133,12 @@ capabilities = browserName=chrome,maxInstances=3,platform=LINUX,version=${chromi
 java-args = -Dwebdriver.chrome.driver=${chromedriver-wrapper-91:location}
 port = 7782
 
+[selenium-server-node-instance-headless-chromium]
+<= selenium-server-node-instance
+capabilities = browserName=chrome,maxInstances=3,platform=LINUX,version=${chromium-source:version},chrome_binary=${headless-chromium-wrapper:rendered}
+java-args = -Dwebdriver.chrome.driver=${headless-chromium:chromedriver}
+port = 7783
+
 
 [selenium-server-admin-password]
 recipe = slapos.cookbook:generate.password
@@ -279,6 +285,7 @@ instance-promises =
   $${selenium-server-node-firefox-78-listen-promise:name}
   $${selenium-server-node-instance-chromium-69-listen-promise:name}
   $${selenium-server-node-instance-chromium-91-listen-promise:name}
+  $${selenium-server-node-instance-headless-chromium-listen-promise:name}
 
 
 [check-port-listening-promise]
@@ -308,8 +315,8 @@ module = check_command_execute
 name = $${:_buildout_section_name_}.py
 config-command =
   $${selenium-server-check-nodes-registered:rendered} $${selenium-server-hub-instance:api-url} $${:expected-node-count}
-# We have 6 nodes with 3 slots each
-expected-node-count = 18
+# We have 7 nodes with 3 slots each
+expected-node-count = 21
 
 [selenium-server-check-nodes-registered]
 recipe = slapos.recipe.template:jinja2
@@ -355,6 +362,11 @@ config-port = $${selenium-server-node-instance-chromium-69:port}
 config-host = $${selenium-server-node-instance-chromium-91:hostname}
 config-port = $${selenium-server-node-instance-chromium-91:port}
 
+[selenium-server-node-instance-headless-chromium-listen-promise]
+<= check-port-listening-promise
+config-host = $${selenium-server-node-instance-headless-chromium:hostname}
+config-port = $${selenium-server-node-instance-headless-chromium:port}
+
 
 [publish-connection-parameter]
 recipe = slapos.cookbook:publish

software/seleniumserver/software.cfg

@@ -8,6 +8,7 @@ extends =
    ../../component/firefox/buildout.cfg
    ../../component/chromium/buildout.cfg
    ../../component/chromedriver/buildout.cfg
+   ../../component/headless-chromium/buildout.cfg
    ../../component/coreutils/buildout.cfg
    ../../component/java/buildout.cfg
    ../../component/caddy/buildout.cfg