grpc ip to be specified as argument default to 127.0.0.1

[spraveenio]

author : @rsrikanth86
(cherry picked from commit d58e542)

[root@exporter-amdgpu-metrics-exporter-24gxw ~]# gpuctl show gpu all | grep -i gpus
No. of gpus : 8
[root@exporter-amdgpu-metrics-exporter-24gxw ~]# curl -s localhost:5000/metrics | grep nodes_total
# HELP amd_gpu_nodes_total Number of GPUs in the node
# TYPE amd_gpu_nodes_total gauge
amd_gpu_nodes_total{cluster_name="amdgpu-k8s-metrics-exporter",hostname="test"} 8

[root@exporter-amdgpu-metrics-exporter-24gxw ~]# amd-smi version
AMDSMI Tool: 26.2.0+021c61fc | AMDSMI Library version: 26.2.0 | ROCm version: 7.1.1 
                | amdgpu version: 6.16.13 | amd_hsmp version: N/A
[root@exporter-amdgpu-metrics-exporter-24gxw ~]#

[sarat-k]

LGTM