Merge pull request #13 from wpengine/CICD-29

[CICD-29] Stop erroneous build failures due to attempt to rsync mu-plugin subdirectories

Author: daniel-savo

exclude.txt

@@ -53,6 +53,7 @@ wp-content/mu-plugins/force-strong-passwords*
 wp-content/mu-plugins/wpengine-common*
 wp-content/mu-plugins/wpe-wp-sign-on-plugin*
 wp-content/mu-plugins/wpe-elasticpress-autosuggest-logger*
+wp-content/mu-plugins/wpe-cache-plugin/*
 wp-content/mu-plugins/wpe-cache-plugin*
 wp-content/mysql.sql