Respect constraints on tempest venv consistently

In case of online mode, there is a procedure to recreate tempest venv.
For consistency of tempest venv during the entire stack.sh process,
add logic to consider the TEMPEST_VENV_UPPER_CONSTRAINTS option here.

Closes-bug: #1980483
Signed-off-by: June Yi <june.yi@samsung.com>
Change-Id: I0cea282152fd363af8671cab1b5f733ebe2bd4df

Author: gochist

lib/tempest

@@ -695,13 +695,13 @@ function configure_tempest {
     local tmp_cfg_file
     tmp_cfg_file=$(mktemp)
     cd $TEMPEST_DIR
-    if [[ "$OFFLINE" != "True" ]]; then
-        tox -revenv-tempest --notest
-    fi
 
     local tmp_u_c_m
     tmp_u_c_m=$(mktemp -t tempest_u_c_m.XXXXXXXXXX)
     set_tempest_venv_constraints $tmp_u_c_m
+    if [[ "$OFFLINE" != "True" ]]; then
+        tox -revenv-tempest --notest
+    fi
     tox -evenv-tempest -- pip install -c $tmp_u_c_m -r requirements.txt
     rm -f $tmp_u_c_m