Set golang version when creating image

src/freedombone-image-customise

     echo "export PATH=\$PATH:\$GOPATH" >> "${rootdir}/home/go/.bashrc"
     chroot "$rootdir" chown -R go:go /home/go
     cp "${rootdir}/home/go/go${GO_VERSION}/bin/"* "${rootdir}/usr/bin"
+    echo "upgrade_golang:$GO_VERSION" >> "${rootdir}/root/${PROJECT_NAME}-completed.txt"
 
     # Tomb
     chroot "$rootdir" apt-get -yq install zsh pinentry-curses
     cd "$rootdir/root/build/tomb" || exit 468368345425
     git checkout "$TOMB_COMMIT" -b "$TOMB_COMMIT"
     chroot "$rootdir" cd /root/build/tomb && make install
-    echo "tomb commit:$TOMB_COMMIT" >> "$rootdir/root/freedombone-completed.txt"
+    echo "tomb commit:$TOMB_COMMIT" >> "$rootdir/root/${PROJECT_NAME}-completed.txt"
 
     if ! grep -q '\* hard maxsyslogins' "$rootdir/etc/security/limits.conf"; then
         echo '* hard maxsyslogins 10' >> "$rootdir/etc/security/limits.conf"