Add more files to run_tests.sh bash8 check

Add functions-common, stackrc, openrc, exerciserc, eucarc to bash8
checks

Change-Id: Ic14b348c871bf98bf35c7e866e715bb75bdccf97
diff --git a/run_tests.sh b/run_tests.sh
index 9d9d186..b4f26c5 100755
--- a/run_tests.sh
+++ b/run_tests.sh
@@ -20,7 +20,7 @@
 else
     LIBS=`find lib -type f | grep -v \.md`
     SCRIPTS=`find . -type f -name \*\.sh`
-    EXTRA="functions"
+    EXTRA="functions functions-common stackrc openrc exerciserc eucarc"
     FILES="$SCRIPTS $LIBS $EXTRA"
 fi