support user custom log location

[bobz965]

• Make sure you have followed Kube-OVN Code Style.

What type of this PR

support user custom log location

Which issue(s) this PR fixes:

Fixes #(issue-number)

WHAT

🤖 Generated by Copilot at 2d88acc

This pull request adds a new feature to customize the log directory for all the kube-ovn components, either as a helm chart parameter or as an environment variable. It updates the helm chart templates, the yaml files, and the values.yaml file to support this feature. It also enables some flags and settings for the egress IP and IPv6-only features.

🤖 Generated by Copilot at 2d88acc

Sing, O Muse, of the mighty deeds of the kube-ovn team,
Who, with skill and wisdom, forged a helm chart for their scheme,
And gave the users power to set the log directory,
For each container and volume, with a simple variable key.

HOW

🤖 Generated by Copilot at 2d88acc

• Add a new variable log_conf.LOG_DIR to configure the log directory for all the containers and volumes that use it (link)
• Replace the hard-coded paths for the host-log-ovs and host-log-ovn volumes with the log_conf.LOG_DIR variable in the central-deploy, controller-deploy, monitor-deploy, ovn-dpdk-ds, and ovncni-ds templates (link, link, link, link, link)
• Replace the hard-coded paths for the kube-ovn-log volume with the log_conf.LOG_DIR variable in the monitor-deploy template (link)
• Replace the hard-coded paths for the ovn-controller and ovs-vswitchd containers with the log_conf.LOG_DIR variable in the ovsovn-ds template (link)
• Replace the hard-coded paths for the kube-ovn-pinger container with the log_conf.LOG_DIR variable in the pinger-ds template (link)
• Replace the hard-coded paths for the kube-ovn-upgrade-ovs-ovn container with the log_conf.LOG_DIR variable in the upgrade-ovs-ovn template (link)
• Apply the same changes to the kube-ovn-dual-stack.yaml, kube-ovn-ipv6.yaml, ovn-dpdk.yaml, and ovn-ha.yaml files, which are alternative ways of deploying kube-ovn without using the helm chart (link, link, link, link, link, link, link, link, link, link, link, link, link, link)

[bobz965]

hi @zhangzujian could you please help review?

[zhangzujian]

The log directory is also used in other files, such as dist/images/kubectl-ko, dist/images/ovs-healthcheck.sh, and dist/images/start-ic-db.sh.

[bobz965]

The log directory is also used in other files, such as dist/images/kubectl-ko, dist/images/ovs-healthcheck.sh, and dist/images/start-ic-db.sh.

是这样的，我们打算只修改 log 目录在 宿主机上的 所在目录，pod 内的路径不需要变动