Retire use of advsvc Neutron role and replace with custom policy

See merge request !40

ADD: Additional Neutron policy tweaks to move away from using the advsvc role for BM node deployment as non-admin users

Large-scale deployment tunings for Ironic/Neutron/Nova

See merge request !39

Define row B Lustre storage

See merge request !36

Use a custom Nova branch including backported fixes from master against Nova bug 1853009 (https://bugs.launchpad.net/nova/+bug/1853009)

Ironic enabled and default drivers need tuning to accommodate both drac and ipmi based hardware sets

Batch up ironic-conductor tunables on DB access and timeouts, image cache and worker pool configs. Disable power sync globally. Deploy sparse images to agents using direct deploy method

Re-enable DR06 SN3700 Cumulus switch. Move to etcd3+http protocol support for NGS switch co-ordination

Increase DB and HAProxy connection timeouts from 10s to 30s, to allow eventlet threads longer to connect

Apply Ironic conductor performance tunings / Revert DR06 Ethernet switches to our management networks

See merge request !38

Blacklist mpt3sas kernel module in IPA PXE boots

See merge request !37

on the conductor host

Remove the Inspector rule setting Ironic node name from LLDP traffic sniffed on em1 interface during inspection.

This is causing conflicts with pre-enrolled nodes if a node of the same name as found through traffic sniffing already exists as a pre-enrolled node. This is most often the case where cabling accidents have occured on the em1 1GbE network.

ADD: Minor edits to Ironic image and Conductor PXE configuration to blacklist the mpt3sas kernel module on IPA boot

This is currently needed as a protective measure against Lustre OSS storage targets being wiped during node automatic clenaing cycles.

There may be a more sophisticated way to achieve the same goal in applying different cleaning steps to classes of baremetal node.

Add and configure all new Cascade Lake ToR and Core switches

See merge request !35

ADD: Nova policy over-rides to allow server create on forced host. This needs more work to tie it to a specific project (arcus-services)