Refactor NGS Pulsar role: remove obsolete files and add new task and handler definitions

ansible/roles/install_ngs-pulsar/templates/pulsar.openrc.j2

@@ -0,0 +1,26 @@
+#!/sbin/openrc-run
+
+name="ngs-pulsar"
+description="Enginsight Pulsar Service"
+
+command="{{ pulsar_install_path }}/{{ pulsar_binary_name }}"
+command_args=">> /var/log/enginsight/pulsar.log 2>&1"
+command_background="yes"
+pidfile="/var/run/${name}.pid"
+command_user="root:root"
+directory="{{ pulsar_install_path }}"
+
+depend() {
+    need net
+    use logger
+    after firewall
+}
+
+start_pre() {
+    checkpath --directory --owner root:root --mode 0755 /var/log/enginsight
+    checkpath --file --owner root:root --mode 0644 /var/log/enginsight/pulsar.log
+    [ -x "{{ pulsar_install_path }}/{{ pulsar_binary_name }}" ] || {
+        eerror "Binary not executable: {{ pulsar_install_path }}/{{ pulsar_binary_name }}"
+        return 1
+    }
+}