oneshot services should only be run once

Still chasing root cause of openbmc/openbmc#3466 but either way, these
services should be configured to only ever run once. They do one-time
things and do not make sense to be run multiple times.

(From meta-openpower rev: b246b509da91db98ebc326afda0d68827ef2b5f9)

(From meta-openpower rev: ec62f2851389f1fc1da87488c6e83f86c69d4ed0)

Change-Id: I6639d80e1f5fd0fd54b6fe7283693ee238c54369
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>

meta-openpower/recipes-phosphor/flash/openpower-software-manager/obmc-flash-bios-ubiremount.service

@@ -5,7 +5,7 @@ Before=org.open_power.Software.Host.Updater.service
 
 [Service]
 Type=oneshot
-RemainAfterExit=no
+RemainAfterExit=yes
 ExecStart=/usr/bin/env obmc-flash-bios ubiremount
 SyslogIdentifier=obmc-flash-bios
 

meta-openpower/recipes-phosphor/flash/openpower-software-manager/op-pnor-msl.service

@@ -6,6 +6,7 @@ After=obmc-flash-bios-updatesymlinks.service
 Type=oneshot
 ExecStart=/usr/bin/env openpower-pnor-msl
 SyslogIdentifier=openpower-pnor-msl
+RemainAfterExit=yes
 
 [Install]
 WantedBy=obmc-flash-bios-updatesymlinks.service

meta-openpower/recipes-phosphor/vpd/openpower-fru-vpd/op-vpd-parser.service

@@ -10,3 +10,4 @@ Type=oneshot
 EnvironmentFile={envfiledir}/obmc/inventory
 ExecStart=/usr/bin/env openpower-read-vpd --vpd $EEPROM --fru $FRUS --object $PATHS
 SyslogIdentifier=openpower-read-vpd
+RemainAfterExit=yes