T2638: FRR: New framework for configuring FRR

This commit adds the python module vyos.frr that support reading and modifying the frr cofiguration.

Functions
get_configuration() :
    Collects the configuration from FRR and returns it as a string

reload_configuration() :
    uses frr-reload.py to activate a new configuration.
    The configuration applied will overwrite the current configuration.

mark_configuration() :
    Does syntax check/validation and add "end" tags to the configuration
    The marked configuration will be returned as a string
    A syntax fault will render an Exception

execute() :
    Execute a command inside vtysh

configure() :
    Executes a command in vtysh config mode

replace_section() / _replace_section() :
    Adds the ability to replace a section of frr code

remove_section() :
    Removes the specified configuration block from the config

For now this supports replacing complete config sub-blocks of configuration and selecting the daemon
to replace inside. This should work for most daemons, but static routing will still be an issue because
this is not a separate sub-config mode

1 files changed, 1 insertions, 0 deletions

diff --git a/debian/control b/debian/control
index 5e14340a8..d2a1ad54c 100644
--- a/debian/control
+++ b/debian/control
@@ -88,6 +88,7 @@ Depends: python3,
   iperf,
   iperf3,
   frr,
+  frr-pythontools,
   radvd,
   dbus,
   usb-modeswitch,