Permit running initialize_data.sh from virtualenv (#6212)

initialize_data.sh

@@ -2,8 +2,10 @@
 # Make non-zero exit codes & other errors fatal.
 set -euo pipefail
 
+export DATABASE_URL=${DATABASE_URL:-mysql://root@127.0.0.1:3306/treeherder}
 # Only execute if we're using the Mysql container
-if [ "${DATABASE_URL}" == "mysql://root@mysql/treeherder" ]; then
+if [ "${DATABASE_URL}" == "mysql://root@mysql/treeherder" ] ||
+   [ "${DATABASE_URL}" == "mysql://root@127.0.0.1:3306/treeherder" ]; then
     # Initialize migrations and SETA
     echo '-----> Running Django migrations and loading reference data'
     ./manage.py migrate --noinput