scripts/systemd/*: fix bpm-sw@.service dependencies

Now, we can start/stop bpm-sw-fe and bpm-sw-be
instances independently or using just the
bpm-sw instance

scripts/systemd/etc/systemd/system/bpm-sw-be@.service

@@ -4,6 +4,7 @@ After=network-online.target
 Wants=network-online.target
 After=media-remote_logs.mount
 Requires=media-remote_logs.mount
+PartOf=bpm-sw@%i.service
 
 [Service]
 EnvironmentFile=/etc/sysconfig/bpm-sw-board
@@ -13,3 +14,4 @@ TimeoutStopSec=2
 
 [Install]
 RequiredBy=bpm-sw-be-ioc@%i.service
+WantedBy=bpm-sw@%i.service

scripts/systemd/etc/systemd/system/bpm-sw-fe@.service

@@ -4,6 +4,7 @@ After=network-online.target
 Wants=network-online.target
 After=media-remote_logs.mount
 Requires=media-remote_logs.mount
+PartOf=bpm-sw@%i.service
 
 [Service]
 EnvironmentFile=/etc/sysconfig/bpm-sw-board
@@ -13,3 +14,4 @@ TimeoutStopSec=2
 
 [Install]
 RequiredBy=bpm-sw-fe-ioc@%i.service
+WantedBy=bpm-sw@%i.service

scripts/systemd/etc/systemd/system/bpm-sw@.service

@@ -5,9 +5,10 @@ Wants=network-online.target
 After=media-remote_logs.mount
 Requires=media-remote_logs.mount
 After=bpm-sw-be@%i.service
-Requires=bpm-sw-be@%i.service
+Wants=bpm-sw-be@%i.service
 After=bpm-sw-fe@%i.service
-Requires=bpm-sw-fe@%i.service
+Wants=bpm-sw-fe@%i.service
 
 [Service]
 ExecStart=/bin/true
+RemainAfterExit=true