NOS-364: Add systemd services for Forwarding Stack services (#330)

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# Summary

Adding systemd service units for Forwarding stack FBOSS services. The
first PR can be found here:
nexthop-ai/private-fboss#277

- Added and enabled `qsfp_service` systemd unit
- Added and enabled `wdge_agent` systemd unit

# Test Plan
TBD
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Author: marif-nexthop

fboss-image/image_builder/templates/centos-09.0/config.sh

@@ -58,6 +58,8 @@ systemctl enable data_corral_service.service
 systemctl enable fan_service.service
 systemctl enable sensor_service.service
 systemctl enable fsdb.service
+systemctl enable qsfp_service.service
+systemctl enable wedge_agent.service
 
 # 6. Done! Cleanup, remember that we are chrooted on the rootfs
 echo "Removing kernel rpms from rootfs..."

fboss-image/image_builder/templates/centos-09.0/root_files/usr/lib/systemd/system/qsfp_service.service

@@ -0,0 +1,31 @@
+# /usr/lib/systemd/system/qsfp_service.service
+[Unit]
+Description=FBOSS QSFP Service
+After=platform_manager.service
+After=rc-local.service
+StartLimitIntervalSec=600
+StartLimitBurst=5
+
+[Service]
+Type=notify
+LimitNOFILE=10000000
+LimitCORE=32G
+MemoryMax=3.75G
+MemorySwapMax=0
+
+Environment="PATH=/opt/fboss/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin"
+Environment="LD_LIBRARY_PATH=/opt/fboss/lib"
+WorkingDirectory=/opt/fboss
+ExecStart=/bin/bash -c 'source /opt/fboss/bin/setup_fboss_env && exec /opt/fboss/bin/qsfp_service'
+
+Restart=always
+RestartSec=30
+TimeoutStartSec=180s
+
+# Logging to journald
+StandardOutput=journal
+StandardError=journal
+SyslogIdentifier=qsfp_service
+
+[Install]
+WantedBy=multi-user.target

fboss-image/image_builder/templates/centos-09.0/root_files/usr/lib/systemd/system/wedge_agent.service

@@ -0,0 +1,32 @@
+# /usr/lib/systemd/system/wedge_agent.service
+[Unit]
+Description=FBOSS Wedge Agent
+After=platform_manager.service
+After=qsfp_service.service
+After=rc-local.service
+StartLimitIntervalSec=600
+StartLimitBurst=5
+
+[Service]
+Type=notify
+LimitNOFILE=10000000
+LimitCORE=32G
+MemoryMax=3.75G
+MemorySwapMax=0
+
+Environment="PATH=/opt/fboss/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin"
+Environment="LD_LIBRARY_PATH=/opt/fboss/lib"
+WorkingDirectory=/opt/fboss
+ExecStart=/bin/bash -c 'source /opt/fboss/bin/setup_fboss_env && exec /opt/fboss/bin/wedge_agent-sai_impl'
+
+Restart=always
+RestartSec=30
+TimeoutStartSec=180s
+
+# Logging to journald
+StandardOutput=journal
+StandardError=journal
+SyslogIdentifier=wedge_agent
+
+[Install]
+WantedBy=multi-user.target