Fix for BUG 402: Subnet creation with NeutronAPIService sometimes fails
with a 409 error

Correct typo and bring hostRoutes out as own init block

Change-Id: I7f6f83cb6a63aa81a057b40c377ac49132a9fcb9
(cherry picked from commit d84669c8b2594b702c7726b9a5de9ac0dd0a4e15)

Change-Id: Id47b7c1e3121f5fb4091d5b799ed7f292a4dd658
Signed-off-by: Ryan Moats <rmoats@us.ibm.com>