scripts/rsync-generation/update-rsync-master: disable shellcheck fps

Disable false positives, unfortunately including the most helpful check
SC2086.

Signed-off-by: Fabian Groffen <grobian@gentoo.org>

scripts/rsync-generation/update-rsync-master.sh

@@ -1,4 +1,7 @@
 #!/usr/bin/env bash
+#shellcheck disable=SC2016,SC2086
+#SC2016: expressions don't expand in single quotes -> purposely in sed
+#SC2086: double quote to prevent word splitting -> exactly what we need w/ set
 
 SCRIPTSTARTTIME=$(date +%s)