eliminate TEST_ONLY differentiation

devstack is a development and test environment, but by default we were
only installing the runtime dependencies. We should install all the
testing required packages as well.

Change-Id: I7c95927b9daad15766aac9d1276b10ca62efb24c
diff --git a/files/rpms/trove b/files/rpms/trove
index c5cbdea..e7bbd43 100644
--- a/files/rpms/trove
+++ b/files/rpms/trove
@@ -1 +1 @@
-libxslt-devel   # testonly
+libxslt-devel