bop solr: increase filter cache auto warming to 30 (from 0).
bop solr: increase filter cache auto warming to 30 (from 0).

cga-harvard/hhypermap-bop,cga-harvard/hhypermap-bop,dsmiley/hhypermap-bop,cga-harvard/hhypermap-bop,dsmiley/hhypermap-bop,dsmiley/hhypermap-bop,cga-harvard/hhypermap-bop,cga-harvard/hhypermap-bop,cga-harvard/hhypermap-bop,cga-harvard/hhypermap-bop