fix definition of ovh_iploadbalancing_udp_*

[beluc]

Description

ovh_iploadbalancing_udp_*: fix definitions

Type of change

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

• make testacc TESTARGS="-run TestAccIpLoadbalancingUdpFrontend_basic"
• make testacc TESTARGS="-run TestAccIpLoadbalancingUdpFrontend_importBasic"
• make testacc TESTARGS="-run TestAccIpLoadbalancingUdpFarm_basic"
• make testacc TESTARGS="-run TestAccIpLoadbalancingUdpFarm_importBasic"
• make testacc TESTARGS="-run TestAccIpLoadbalancingUdpFarmServer_basic"
• make testacc TESTARGS="-run TestAccIpLoadbalancingUdpFarmServer_importBasic"

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings or issues
• I have added acceptance tests that prove my fix is effective or that my feature works
• New and existing acceptance tests pass locally with my changes
• I ran succesfully go mod vendor if I added or modify go.mod file