Fix installed message catalog uses in kdb tests

In src/tests/Makefile.in, rename RUN_SETUP to RUN_DB_TEST, and include
"LC_ALL=C" in the definition to avoid using the message catalog.  Also
include $(VALGRIND) for consistency with RUN_TEST.

https://github.com/krb5/krb5/commit/9a6dcd4b56df245556e77b9b1db6a8c3f486cf9e
Author: Greg Hudson <ghudson@mit.edu>
Commit: 9a6dcd4b56df245556e77b9b1db6a8c3f486cf9e
Branch: master
 src/tests/Makefile.in |   29 +++++++++++++++--------------
 1 files changed, 15 insertions(+), 14 deletions(-)