This commit modifies curl option in wait_for_nova_resources to
bypass proxy with --noproxy option. Without this option, if you run
DevStack behind proxy, curl command fails with timeout &
wait_for_nova_resources also fails.
Because curl only accesses Placement service API, this modification
should be fair.
Change-Id: I5524a76594bb784f59be4d4e3970f72d4497891b
1c3e20d859