[dev] Allow extra args to scripts/run-tox-scenario (#1027)

Author: brettlangdon

scripts/run-tox-scenario

@@ -1,6 +1,8 @@
 #!/usr/bin/env bash
 set -e
 PATTERN="$1"
+shift
+
 # CircleCI has a bug in its workspace code where it can't handle filenames with some chars
 CLEANED_PATTERN=`echo $PATTERN | tr '^?()$' '_'`
-exec tox -l | grep "$PATTERN" | tr '\n' ',' | xargs tox --result-json /tmp/"$CLEANED_PATTERN".results -e
+exec tox -l | grep "$PATTERN" | tr '\n' ',' | xargs -I ARGS tox --result-json /tmp/"$CLEANED_PATTERN".results -e ARGS -- $@