[PATCH 2/3] mdcheck: use ${} to pass variable to mdcheck

[NeilBrown <neilb@xxxxxxx>]

$MDADM_CHECK_DURATION allows the value to be split on spaces.
${MDADM_CHECK_DURATION} avoids such splitting.

Making this change removes the need for double quoting when setting
the default Environment, and means that double quoting isn't needed
in the EnvironmentFile.

Signed-off-by: NeilBrown <neilb@xxxxxxx>
---
 systemd/mdcheck_continue.service |    5 ++---
 systemd/mdcheck_start.service    |    4 ++--
 2 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/systemd/mdcheck_continue.service b/systemd/mdcheck_continue.service
index 592c60798f82..deac695485b0 100644
--- a/systemd/mdcheck_continue.service
+++ b/systemd/mdcheck_continue.service
@@ -11,8 +11,7 @@ ConditionPathExistsGlob = /var/lib/mdcheck/MD_UUID_*
 
 [Service]
 Type=oneshot
-Environment= MDADM_CHECK_DURATION='"6 hours"'
+Environment= MDADM_CHECK_DURATION="6 hours"
 EnvironmentFile=-/run/sysconfig/mdadm
 ExecStartPre=-/usr/lib/mdadm/mdadm_env.sh
-ExecStart=/usr/share/mdadm/mdcheck --continue --duration $MDADM_CHECK_DURATION
-
+ExecStart=/usr/share/mdadm/mdcheck --continue --duration ${MDADM_CHECK_DURATION}
diff --git a/systemd/mdcheck_start.service b/systemd/mdcheck_start.service
index 812141bb5c9a..f17f1aaec217 100644
--- a/systemd/mdcheck_start.service
+++ b/systemd/mdcheck_start.service
@@ -11,7 +11,7 @@ Wants=mdcheck_continue.timer
 
 [Service]
 Type=oneshot
-Environment= MDADM_CHECK_DURATION='"6 hours"'
+Environment= MDADM_CHECK_DURATION="6 hours"
 EnvironmentFile=-/run/sysconfig/mdadm
 ExecStartPre=-/usr/lib/mdadm/mdadm_env.sh
-ExecStart=/usr/share/mdadm/mdcheck --duration $MDADM_CHECK_DURATION
+ExecStart=/usr/share/mdadm/mdcheck --duration ${MDADM_CHECK_DURATION}