* RR client support in minigraph for FRR
* Fix python warning from previous rrclient commit and move config handling to a more relevant place for this cmd
* Add config support for nhopself, keepalive and holdtime timers.
* Add route-map to prefer global nexthops for ebgp learned prefixes.
Modify minigraph parser output format so it fit DB schema
Modify configuration templates to fit new schema
Systemd services dependencies are modified so database starts before any configuration consumer
* Adjusting FRR's jinja template to meet latest sonic-cfgen requirements. Basically, i'm just extending #448 changes into FRR.
* Eliminate FRR's integrated-config file to prevent daemons from bypassing their own config files. FRR daemons now default to an integrated-config file for config-parsing purposes. But we are still interested in having each daemon looking in their specific config file (bgpd.conf, zebra.conf, etc). So here i'm just deleting this integrating-config file to prevent FRR from running from a bogus config-file.
RB=
G=lnos-reviewers
R=ntrianta,rjonnadu,rmolina,sfardeen,zxu
A=
- Extending SONiC building infrastructure to provide users
with greater flexibility, by allowing them to elect a
routing-stack different than the default one (quagga). The desired
routing-stack will be defined in rules/config file.
- As part of these changes I'm adding support for
Free-Range-Routing (FRR) stack. Quagga will continue to be
the default routing-stack.
Signed-off-by: Rodny Molina <rodny@linkedin.com>