apparently the upstream naming is tempest-lib

tempest_lib was how this was generally referred to, however that meant
that the job naming wasn't specifying the correctly src
library. Change to tempest-lib to actually test these things before
release.

Change-Id: I4c0712156d7ff71ee43747f30ab940e249d12ebc
diff --git a/lib/tempest b/lib/tempest
index 9e025a1..e903ec3 100644
--- a/lib/tempest
+++ b/lib/tempest
@@ -45,7 +45,7 @@
 # --------
 
 # Set up default directories
-GITDIR["tempest_lib"]=$DEST/tempest-lib
+GITDIR["tempest-lib"]=$DEST/tempest-lib
 
 TEMPEST_DIR=$DEST/tempest
 TEMPEST_CONFIG_DIR=${TEMPEST_CONFIG_DIR:-$TEMPEST_DIR/etc}
@@ -446,9 +446,9 @@
 
 # install_tempest_lib() - Collect source, prepare, and install tempest-lib
 function install_tempest_lib {
-    if use_library_from_git "tempest_lib"; then
-        git_clone_by_name "tempest_lib"
-        setup_develop "tempest_lib"
+    if use_library_from_git "tempest-lib"; then
+        git_clone_by_name "tempest-lib"
+        setup_develop "tempest-lib"
     fi
 }