Added echo_client.py
Added echo_client.py

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