[FIX] Pip packeges installation according to OCA/oca-ci#93

Author: josep-tecnativa

build.d/700-odoo-install

@@ -7,7 +7,7 @@ log INFO Installing Odoo from $src
 # For development you could want to avoid installing Odoo to speed up build
 if [ "$PIP_INSTALL_ODOO" == true ]; then
     args="--no-cache-dir"
-    pip install $args --editable $src
+    pip install $args --editable $src --config-setting=editable_mode=compat
 else
     log WARNING Blindly symlinking odoo executable
     bin=$src/odoo-bin