Add Trove (database) Flavor API Tests

Added Trove (database) service and flavor API tests.

Partially implements blueprint: trove-tempest
Change-Id: Ic4c43bd42fba96950b26232a37bcf300e1e742d1
diff --git a/etc/tempest.conf.sample b/etc/tempest.conf.sample
index ee2da40..ce867e6 100644
--- a/etc/tempest.conf.sample
+++ b/etc/tempest.conf.sample
@@ -391,6 +391,20 @@
 #endpoint_type=publicURL
 
 
+[database]
+
+#
+# Options defined in tempest.config
+#
+
+# Catalog type of the Database service. (string value)
+#catalog_type=database
+
+# Valid primary flavor to use in database tests. (string
+# value)
+#db_flavor_ref=1
+
+
 [debug]
 
 #
@@ -773,6 +787,10 @@
 # value)
 #ironic=false
 
+# Whether or not Trove is expected to be available (boolean
+# value)
+#trove=false
+
 
 [stress]