vendor: lineage: Upgrade to LineageOS 15.1

 * Update backuptool versions
 * Update text references
 * Set version minor to 1

Change-Id: I30eea1f1cb01e2165311364cc62b589669bb1290
diff --git a/vendorsetup.sh b/vendorsetup.sh
index d172707..dcc20c3 100644
--- a/vendorsetup.sh
+++ b/vendorsetup.sh
@@ -1,4 +1,4 @@
-for combo in $(curl -s https://raw.githubusercontent.com/LineageOS/hudson/master/lineage-build-targets | sed -e 's/#.*$//' | grep lineage-15.0 | awk '{printf "lineage_%s-%s\n", $1, $2}')
+for combo in $(curl -s https://raw.githubusercontent.com/LineageOS/hudson/master/lineage-build-targets | sed -e 's/#.*$//' | grep lineage-15.1 | awk '{printf "lineage_%s-%s\n", $1, $2}')
 do
     add_lunch_combo $combo
 done