bug #2352: Set host share variables to long long type

Conflicts:
	src/host/Host.cc
Bug #2353 #2354: disk_type is not removed from template, is processed in update, and is case insensitive
(cherry picked from commit ff384e6b0193eb79b953aa2510a4f468e8fd116e)
Bug #2356: Ceph DS preset only allows RBD
(cherry picked from commit 515f127acf7f7904e8dbbc1ae58e4c5c3ef5330d)