Fixing up tests for download cache

Author: AndrewFarley

test.bats

@@ -7,13 +7,15 @@ setup() {
         export LC_ALL=C.UTF-8
         export LANG=C.UTF-8
     fi
+    export USR_CACHE_DIR=`node -e 'console.log(require("./lib/shared").getUserCachePath())'`
 }
 
 teardown() {
     rm -rf puck puck2 puck3 node_modules .serverless .requirements.zip .requirements-cache
     if [ -f serverless.yml.bak ]; then mv serverless.yml.bak serverless.yml; fi
-    # Remove our items in appdirs user cache dir
-    node -e 'require("../../lib/clean").cleanupStaticCache()'
+    if [ -d "${USR_CACHE_DIR}" ] ; then
+        rm -Rf "${USR_CACHE_DIR}"
+    fi
 }
 
 @test "py3.6 can package flask with default options" {