[ci-workers] Add support for MacOSX

contrib/ci-workers/templates/buildbot-worker.plist.j2

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>Label</key>
+	<string>net.buildbot.worker</string>
+	<key>ProgramArguments</key>
+	<array>
+		<string>{{ buildbot_worker_dir }}/venv/bin/buildbot-worker</string>
+		<string>start</string>
+		<string>{{ buildbot_worker_name }}</string>
+	</array>
+	<key>WorkingDirectory</key>
+	<string>{{ buildbot_worker_dir }}</string>
+	<key>UserName</key>
+	<string>{{ buildbot_worker_user }}</string>
+	<key>KeepAlive</key>
+	<dict>
+		<key>NetworkState</key>
+		<true/>
+	</dict>
+</dict>
+</plist>