[Release] Log build output for each distribution

dev/create-release/create-release.sh

@@ -27,6 +27,7 @@
 # Would be nice to add:
 #  - Send output to stderr and have useful logging in stdout
 
+# Note: The following variables must be set before use!
 GIT_USERNAME=${GIT_USERNAME:-pwendell}
 GIT_PASSWORD=${GIT_PASSWORD:-XXX}
 GPG_PASSPHRASE=${GPG_PASSPHRASE:-XXX}
@@ -101,7 +102,7 @@ make_binary_release() {
   cp -r spark spark-$RELEASE_VERSION-bin-$NAME
   
   cd spark-$RELEASE_VERSION-bin-$NAME
-  ./make-distribution.sh --name $NAME --tgz $FLAGS
+  ./make-distribution.sh --name $NAME --tgz $FLAGS 2>&1 | tee binary-release-$NAME.log
   cd ..
   cp spark-$RELEASE_VERSION-bin-$NAME/spark-$RELEASE_VERSION-bin-$NAME.tgz .
   rm -rf spark-$RELEASE_VERSION-bin-$NAME