Add --insecure to curl output if required
Add --insecure to curl output if required

When the --insecure option is given, the curl command did not have
certificate verification turned off.

Partial-Bug: #1249891
Change-Id: Ia4f21d03f060bac0db51a79b89b0246b2ee3d041

jamielennox/python-keystoneclient,Mercador/python-keystoneclient,jamielennox/python-keystoneclient,alexpilotti/python-keystoneclient,klmitch/python-keystoneclient,Mercador/python-keystoneclient,metacloud/python-keystoneclient,klmitch/python-keystoneclient,jamielennox/python-keystoneclient,metacloud/python-keystoneclient,sdpp/python-keystoneclient,magic0704/python-keystoneclient,sdpp/python-keystoneclient,magic0704/python-keystoneclient,alexpilotti/python-keystoneclient,ging/python-keystoneclient,ging/python-keystoneclient,darren-wang/ksc,darren-wang/ksc