CNI plugins show "index out of range" on CentOS 7.4 for kubernetes 1.8.9 about azure-container-networking HOT 5 CLOSED

May 24 11:45:19 orion-stg-k8s-agentpool1-0 env[13385]: panic: runtime error: index out of range
May 24 11:45:19 hostname env[13385]: goroutine 1 [running]:
May 24 11:45:19 hostname env[13385]: github.com/Azure/azure-container-networking/telemetry.(*Report).GetOSDetails(0xc4200786e0)
May 24 11:45:19 hostname  env[13385]:         /go/src/github.com/Azure/azure-container-networking/telemetry/telemetry_linux.go:112 +0x55c
May 24 11:45:19 hostname  env[13385]: github.com/Azure/azure-container-networking/telemetry.(*ReportManager).GetReport(0xc420048300, 0x6ee1ba, 0x3, 0x711914, 0x6)
May 24 11:45:19 hostname  env[13385]:         /go/src/github.com/Azure/azure-container-networking/telemetry/telemetry.go:139 +0xa3
May 24 11:45:19 hostname  env[13385]: main.main()

This is \n (\s \m \r) \t
SSH host key: SHA256:4436436b46346g43 (RSA)
SSH host key: SHA256:f436346f46f436f46 (ECDSA)
SSH host key: SHA256:f63464f646 (ED25519)
SSH host key: SHA256:f34f634f6436f43f63 (DSA)
eth0: \4{eth0} \6{eth0}

NAME="Container Linux by CoreOS"
ID=coreos
VERSION=1786.0.1
VERSION_ID=1786.0.1
BUILD_ID=2018-05-23-1022
PRETTY_NAME="Container Linux by CoreOS 1786.0.1 (Rhyolite)"
ANSI_COLOR="38;5;75"
HOME_URL="https://coreos.com/"
BUG_REPORT_URL="https://issues.coreos.com"
COREOS_BOARD="amd64-usr"

NAME="Ubuntu"
VERSION="16.04.3 LTS (Xenial Xerus)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 16.04.3 LTS"
VERSION_ID="16.04"
HOME_URL="http://www.ubuntu.com/"
SUPPORT_URL="http://help.ubuntu.com/"
BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/"
VERSION_CODENAME=xenial
UBUNTU_CODENAME=xenial

NAME="CentOS Linux"
VERSION="7 (Core)"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="7"
PRETTY_NAME="CentOS Linux 7 (Core)"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:7"
HOME_URL="https://www.centos.org/"
BUG_REPORT_URL="https://bugs.centos.org/"

CENTOS_MANTISBT_PROJECT="CentOS-7"
CENTOS_MANTISBT_PROJECT_VERSION="7"
REDHAT_SUPPORT_PRODUCT="centos"
REDHAT_SUPPORT_PRODUCT_VERSION="7"

// This function  creates a report with os details(ostype, version).
func (report *Report) GetOSDetails() {
	linesArr, err := ReadFileByLines("/etc/os-release")
	if err != nil || len(linesArr) <= 0 {
		report.OSDetails = &OSInfo{OSType: runtime.GOOS}
		report.OSDetails.ErrorMessage = "reading /etc/os-release failed with" + err.Error()
		return
	}

	osInfoArr := make(map[string]string)
	
	for i := range linesArr {
                s := strings.Split(linesArr[i], "=")
                osInfoArr[s[0]] = strings.TrimSuffix(s[1], "\n")
        }

	out, err := exec.Command("uname", "-r").Output()
	if err != nil {
		report.OSDetails = &OSInfo{OSType: runtime.GOOS}
		report.OSDetails.ErrorMessage = "uname -r failed with " + err.Error()
		return
	}

	kernelVersion := string(out)
	kernelVersion = strings.TrimSuffix(kernelVersion, "\n")

	report.OSDetails = &OSInfo{
		OSType:         runtime.GOOS,
		OSVersion:      osInfoArr["VERSION"],
		KernelVersion:  kernelVersion,
		OSDistribution: osInfoArr["ID"],
	}
}