remove random string prefix in LeaderElectionID

[aaroniscode]

Issue #, if available: N/A

Description of changes: remove the random string prefix in LeaderElectionID.

Before

» kubectl -n system get lease
NAME                             HOLDER                                                                         AGE
6288bc47.amazon-vpc-lattice.io   gateway-api-controller-7fcfcf96c8-d9chk_b8d441c3-7e84-4f70-866f-ae65dd229cd0   131m

After

» kubectl -n system get lease
NAME                             HOLDER                                                                         AGE
amazon-vpc-lattice.io            gateway-api-controller-7f6567978-6lkv7_4682e004-cef2-415f-8e8a-b283806f08ec    47m

For reference, here are some other related projects and their LeaderElectionID

• EC2 ACK — ec2.services.k8s.aws
• IAM ACK — iam.services.k8s.aws
• AWS LB — aws-load-balancer-controller-leader
• Karpenter — karpenter-leader-election

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[liwenwu-amazon]

LGTM. Thanks