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/debs/glance b/files/debs/glance
index 9fda6a6..37877a8 100644
--- a/files/debs/glance
+++ b/files/debs/glance
@@ -1,6 +1,6 @@
-libmysqlclient-dev  # testonly
-libpq-dev           # testonly
-libssl-dev          # testonly
+libmysqlclient-dev
+libpq-dev
+libssl-dev
 libxml2-dev
-libxslt1-dev        # testonly
-zlib1g-dev           # testonly
+libxslt1-dev
+zlib1g-dev