initialize eventlet for tests
initialize eventlet for tests

Some tests are succeededing but should not be.
Running individual tests fails if the tests
exercise code that needs to be initialized by
keystone/common/environment

Change-Id: Ia392d0273fd8a5d12cdf43fb6ff55f1819d8f3f2

vivekdhayaal/keystone,himanshu-setia/keystone,mahak/keystone,dsiddharth/access-keys,ajayaa/keystone,ilay09/keystone,reeshupatel/demo,blueboxgroup/keystone,idjaw/keystone,nuxeh/keystone,dims/keystone,promptworks/keystone,vivekdhayaal/keystone,MaheshIBM/keystone,blueboxgroup/keystone,rushiagr/keystone,dstanek/keystone,jumpstarter-io/keystone,nuxeh/keystone,promptworks/keystone,mahak/keystone,rodrigods/keystone,nuxeh/keystone,dsiddharth/access-keys,jonnary/keystone,klmitch/keystone,dims/keystone,dsiddharth/access-keys,openstack/keystone,maestro-hybrid-cloud/keystone,ajayaa/keystone,mahak/keystone,rushiagr/keystone,ilay09/keystone,ging/keystone,roopali8/keystone,dstanek/keystone,promptworks/keystone,jamielennox/keystone,MaheshIBM/keystone,cernops/keystone,reeshupatel/demo,ilay09/keystone,maestro-hybrid-cloud/keystone,JioCloud/keystone,takeshineshiro/keystone,jonnary/keystone,UTSA-ICS/keystone-kerberos,himanshu-setia/keystone,UTSA-ICS/keystone-kerberos,reeshupatel/demo,openstack/keystone,jamielennox/keystone,vivekdhayaal/keystone,jumpstarter-io/keystone,derekchiang/keystone,klmitch/keystone,idjaw/keystone,roopali8/keystone,openstack/keystone,rodrigods/keystone,ging/keystone,rushiagr/keystone,JioCloud/keystone,rajalokan/keystone,derekchiang/keystone,jumpstarter-io/keystone,takeshineshiro/keystone,rajalokan/keystone,cernops/keystone,rajalokan/keystone,dstanek/keystone,derekchiang/keystone