Description of problem:

There are failures when creating vms

013-08-07 22:00:17,241 - MainThread - vms - DEBUG - CREATE request content is --  url:https://jenkins-automation-rpm-vm37.eng.lab.tlv.redhat.com/api/vms body:<vm>
    <name>nfsTestVm</name>
    <description>nfsTestVM</description>
    <type>server</type>
    <memory>1073741824</memory>
    <cpu>
        <topology cores="1" sockets="1"/>
    </cpu>
    <os type="rhel_6x64"/>
    <display>
        <type>spice</type>
    </display>
    <cluster href="/api/clusters/2173f7ce-5d2f-47cd-8608-5619e1dba3c6" id="2173f7ce-5d2f-47cd-8608-5619e1dba3c6">
        <name>nfsStorageTest</name>
        <link href="/api/clusters/2173f7ce-5d2f-47cd-8608-5619e1dba3c6/networks" rel="networks"/>
        <link href="/api/clusters/2173f7ce-5d2f-47cd-8608-5619e1dba3c6/permissions" rel="permissions"/>
        <link href="/api/clusters/2173f7ce-5d2f-47cd-8608-5619e1dba3c6/glustervolumes" rel="glustervolumes"/>
        <cpu id="Intel Westmere Family"/>
        <data_center href="/api/datacenters/34c9ea53-95f3-46e7-b9db-ce818571e598" id="34c9ea53-95f3-46e7-b9db-ce818571e598"/>
        <memory_policy>
            <overcommit percent="200"/>
            <transparent_hugepages>
                <enabled>true</enabled>
            </transparent_hugepages>
        </memory_policy>
        <scheduling_policy>
            <policy>none</policy>
        </scheduling_policy>
        <version major="3" minor="2"/>
        <error_handling>
            <on_error>migrate</on_error>
        </error_handling>
        <virt_service>true</virt_service>
        <gluster_service>false</gluster_service>
        <threads_as_cores>false</threads_as_cores>
        <tunnel_migration>false</tunnel_migration>
        <trusted_service>false</trusted_service>
        <ballooning_enabled>false</ballooning_enabled>
    </cluster>
    <template id="00000000-0000-0000-0000-000000000000"/>
</vm>
 

and an exception is being thrown about missing class definition
Caused by: java.lang.NoClassDefFoundError: org/yaml/snakeyaml/DumperOptions