Add a Solr doc section specific to DSE
Add a Solr doc section specific to DSE

This commit fills the formerly-empty DSE Search section under the Solr
doc chapter.  The steps were tested on DSE 4.5.2 and a 0.5.1-SNAPSHOT
version shortly before 0.5.1 went final.

nvoron23/titan,nvoron23/titan,ThiagoGarciaAlves/titan,mwpnava/titan,hortonworks/titan,xlcupid/titan,anuragkh/titan,kalatestimine/titan,mwpnava/titan,jankotek/titan,jankotek/titan,fengshao0907/titan,mwpnava/titan,jamestyack/titan,mwpnava/titan,wangbf/titan,kangkot/titan,jamestyack/titan,wangbf/titan,elkingtonmcb/titan,kangkot/titan,kalatestimine/titan,xlcupid/titan,anuragkh/titan,wangbf/titan,xlcupid/titan,ThiagoGarciaAlves/titan,hortonworks/titan,kalatestimine/titan,elkingtonmcb/titan,tomersagi/titan,jankotek/titan,nvoron23/titan,hortonworks/titan,qiuqiyuan/titan,ThiagoGarciaAlves/titan,ThiagoGarciaAlves/titan,ThiagoGarciaAlves/titan,xlcupid/titan,fengshao0907/titan,jamestyack/titan,hortonworks/titan,qiuqiyuan/titan,anuragkh/titan,kalatestimine/titan,elkingtonmcb/titan,qiuqiyuan/titan,xlcupid/titan,kalatestimine/titan,kangkot/titan,qiuqiyuan/titan,jamestyack/titan,anuragkh/titan,mwpnava/titan,tomersagi/titan,kangkot/titan,wangbf/titan,jankotek/titan,elkingtonmcb/titan,tomersagi/titan,fengshao0907/titan,qiuqiyuan/titan,tomersagi/titan,nvoron23/titan,evanv/titan,evanv/titan,anuragkh/titan,kangkot/titan,wangbf/titan,evanv/titan,evanv/titan,elkingtonmcb/titan,hortonworks/titan,tomersagi/titan,fengshao0907/titan,fengshao0907/titan,jamestyack/titan,evanv/titan,jankotek/titan