THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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These values are taken from hypervisor_type and hypervisor_version column of hypervisor_capabilities table in cloud DB. Refer this table for latest possible values.
XenServer : default
XenServer : XCP 1.0
XenServer : 5.6 50
XenServer : 5.6 FP1
XenServer : 5.6 SP2
XenServer : 6.0 50
XenServer : 6.0.2
VMware : default
VMware : 4.0
VMware : 4.1
VMware : 5.0
VMware : 5.1
KVM : default
OvmOva : default
OvmOva : 2.3
XenServer : 6.1.0
XenServer : 6.2.0
LXC : default
HypervHyper : 6.2
VMware : 5.5
XenServer : 6.5.0
Ovm3 : 3.2
Ovm3 : 3.3