Ensure release candidate build script runs at project root

src/build/create-release-candidate.sh

diff --git a/src/build/create-release-candidate.sh b/src/build/create-release-candidate.sh
index f7c5f3b..994b14a 100755
--- a/src/build/create-release-candidate.sh
+++ b/src/build/create-release-candidate.sh
@@ -20,6 +20,8 @@
 
 cd "$(dirname "$0")/.." || exit 1
 scriptname=$(basename "$0")
+projectroot="$(git rev-parse --show-toplevel)" || exit 1
+cd "$projectroot" || exit 1
 export tlpName=accumulo
 export projName="${tlpName}2-maven-plugin"
 export projNameLong="Accumulo2 Maven Plugin"