HACKING compliance & staticly init module vars
HACKING compliance & staticly init module vars

- HACKING: "When defining global constants, define them before functions
  and classes"
- Statically initializing other module variables to None

Change-Id: I8d01e179262a8b16dbe49edef8e23260970c84a0

savi-dev/keystone,citrix-openstack-build/keystone,dstanek/keystone,townbull/keystone-dtrust,jonnary/keystone,MaheshIBM/keystone,rushiagr/keystone,vivekdhayaal/keystone,promptworks/keystone,klmitch/keystone,dims/keystone,kwss/keystone,jonnary/keystone,derekchiang/keystone,rajalokan/keystone,jumpstarter-io/keystone,rickerc/keystone_audit,promptworks/keystone,ntt-sic/keystone,UTSA-ICS/keystone-kerberos,kwss/keystone,jumpstarter-io/keystone,jamielennox/keystone,mahak/keystone,klmitch/keystone,ajayaa/keystone,savi-dev/keystone,citrix-openstack-build/keystone,openstack/keystone,cbrucks/Federated_Keystone,MaheshIBM/keystone,rajalokan/keystone,ging/keystone,rushiagr/keystone,dstanek/keystone,kwss/keystone,roopali8/keystone,ilay09/keystone,promptworks/keystone,maestro-hybrid-cloud/keystone,dsiddharth/access-keys,cloudbau/keystone,derekchiang/keystone,idjaw/keystone,rushiagr/keystone,himanshu-setia/keystone,ilay09/keystone,rajalokan/keystone,reeshupatel/demo,cbrucks/Federated_Keystone,rodrigods/keystone,idjaw/keystone,rickerc/keystone_audit,openstack/keystone,UTSA-ICS/keystone-kerberos,jumpstarter-io/keystone,citrix-openstack-build/keystone,JioCloud/keystone,ajayaa/keystone,townbull/keystone-dtrust,reeshupatel/demo,cernops/keystone,cbrucks/Federated_Keystone,nuxeh/keystone,takeshineshiro/keystone,mahak/keystone,maestro-hybrid-cloud/keystone,ilay09/keystone,openstack/keystone,savi-dev/keystone,townbull/keystone-dtrust,himanshu-setia/keystone,ntt-sic/keystone,vivekdhayaal/keystone,dsiddharth/access-keys,reeshupatel/demo,cloudbau/keystone,dims/keystone,rodrigods/keystone,cloudbau/keystone,nuxeh/keystone,ntt-sic/keystone,blueboxgroup/keystone,ging/keystone,roopali8/keystone,takeshineshiro/keystone,cernops/keystone,vivekdhayaal/keystone,rickerc/keystone_audit,dsiddharth/access-keys,jamielennox/keystone,mahak/keystone,nuxeh/keystone,JioCloud/keystone,derekchiang/keystone,dstanek/keystone,blueboxgroup/keystone