Use configured vcl_conf

Previously broken, because didn't match location used in
custom-default.erb.
Make the template cookbook configurable

(And also the source--not so important but may as well have that too.)
Restart varnish after changing VCL
Merge branch 'COOK-1261'
add name attribute to metadata
release v0.9.4
Merge remote branch 'upstream/master'

Conflicts:
	recipes/default.rb
Move shmlog to a tmpfs mount as recommend. Make cli_timeout tunable.