Unable to specify PUSH mode in cameras.xml descriptor

[sarxos]

When using IP camera driver, when list of cameras should be read from XML file, there is no way to specify camera mode other than PULL. This is because of the incorrect JAXB mapping in IpCamMode enum.

@XmlEnum
public enum IpCamMode {

    @XmlEnumValue("pull")
    PULL,

    @XmlEnumValue("pull")
    PUSH,
}

The @XmlEnumValue for PUSH is the same as for the PULL, and thus makes it broken.