Add aggregate-address for BGP to DO

[JeffGiroux]

Is your feature request related to a problem? Please describe.

A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]

Describe the solution you'd like

Not all BGP api is available through DO. I need the ability to aggregate an address.

Describe alternatives you've considered

Example BGP output below using "aggregate-address 10.0.0.0/16 summary-only"

router bgp 65530
 bgp graceful-restart restart-time 120
 aggregate-address 10.0.0.0/16 summary-only
 aggregate-address 10.1.0.0/16 summary-only
 aggregate-address 10.2.0.0/16 summary-only
 aggregate-address 10.3.0.0/16 summary-only
 redistribute kernel
 neighbor 10.255.255.4 remote-as 65515
 neighbor 10.255.255.4 ebgp-multihop 2
 neighbor 10.255.255.5 remote-as 65515
 neighbor 10.255.255.5 ebgp-multihop 2
!

Additional context

This command is available with the new bgp rest api in tmsh. Please make it available in DO.

Reference... https://github.com/F5Networks/f5-declarative-onboarding/issues/124

[JeffGiroux]

class for object does not list aggregate-address in schema

https://clouddocs.f5.com/products/extensions/f5-declarative-onboarding/latest/schema-reference.html#routingbgp