Rename binary to threshold and update build/release packaging

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

scripts/build.sh

@@ -17,7 +17,7 @@ DIR="$( cd -P "$( dirname "$SOURCE" )/.." && pwd )"
 cd "$DIR"
 
 # Set build tags
-BUILD_TAGS="${BUILD_TAGS:-"boundary"}"
+BUILD_TAGS="${BUILD_TAGS:-"threshold"}"
 echo "==> Build tags: ${BUILD_TAGS}"
 
 # Get the git commit
@@ -61,7 +61,7 @@ fi
 BASE_PRODUCT_VERSION=${BASE_PRODUCT_VERSION:=$(cat version/VERSION)}
 
 # Declare binary paths!
-BINARY_NAME="boundary${BINARY_SUFFIX}"
+BINARY_NAME="threshold${BINARY_SUFFIX}"
 BIN_PATH=${BIN_PATH:=bin/${BINARY_NAME}}
 BIN_PARENT_DIR="${BIN_PATH%/*}"
 BIN_PARENT_DIR="${BIN_PARENT_DIR##*/}"
@@ -85,10 +85,10 @@ ${GO_CMD} build \
       -X 'github.com/hashicorp/boundary/version.BuildDate=$BUILD_DATE'
       " \
     -o "$BIN_PATH" \
-    ./cmd/boundary
+    ./cmd/threshold
 
 # Copy binary into gopath if desired
-if [ "${BOUNDARY_INSTALL_BINARY}x" != "x" ]; then
+if [ "${THRESHOLD_INSTALL_BINARY:-${BOUNDARY_INSTALL_BINARY:-}}x" != "x" ]; then
     echo "==> Moving binary into GOPATH/bin..."
     mv -f "${BIN_PATH}" "${GOPATH}/bin/"
 fi