We attempt to cache things served by zuul-web in our apache proxy. This
is to reduce the load on the zuul-web process which has to query
gearman, the sql database, and eventuall the zookeeper database to
produce its responses.
Things are currently operating slowly and it isn't clear if we're
caching properly. To check that better update our logging format to
record cache hits and misses. Also drop an unnecessary .* in the
CacheEnable url-strings for /static/ as it is unclear if the .* is
treated as a regex here.
Change-Id: Ib57c085fa15365b89b3276e037339dbeddb094e3
9c68191ce8