[LU-14662] Add mechanism for provisioning sysctl settings and routing rules for MR

• Type: Improvement
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.15.0
• Assignee: Serguei Smirnov
• Reporter: Serguei Smirnov

Description

Make sure all the needed sysctl settings for MR are applied:

net.ipv4.conf.all.accept_local = 1
net.ipv4.conf.all.arp_ignore = 1
net.ipv4.conf.all.arp_filter = 0
net.ipv4.conf.all.arp_announce = 2
net.ipv4.conf.all.rp_filter = 0

Also, when ksocklnd is initialized or new ethernet interfaces are added by lnetctl we should automatically set the routing rules.