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

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

@@ -0,0 +1,25 @@
+# roles/install_ngs-pulsar/templates/pulsar.service.j2
+[Unit]
+Description=NGS-Pulsar
+ConditionPathExists={{ pulsar_install_path }}/
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+Type=simple
+User=root
+WorkingDirectory={{ pulsar_install_path }}/
+ExecStartPre=/bin/mkdir -p /var/log/enginsight
+ExecStart={{ pulsar_install_path }}/{{ pulsar_binary_name }}
+ExecStopPost={{ pulsar_install_path }}/{{ pulsar_binary_name }} -clear-shield
+KillMode=process
+Restart=on-failure
+RestartSec=3
+StartLimitInterval=600
+StartLimitBurst=5
+StandardOutput=journal
+StandardError=journal
+SyslogIdentifier=pulsar-m8
+
+[Install]
+WantedBy=multi-user.target