segfault after trying to include a previous deleted policy #170
Description
pktvisor is generating segfault and also error if you delete an policy and try to add the same deleted again.
Logs
[2022-01-07 10:09:52.112] [visor] [info] policy [default]: stopping
[2022-01-07 10:09:52.113] [visor] [info] policy [default]: stopping input instance: default-default
[2022-01-07 10:09:53.894] [visor] [info] policy [default]: stopping handler instance: default-net
[2022-01-07 10:09:53.894] [visor] [info] policy [default]: stopping handler instance: default-dhcp
[2022-01-07 10:09:53.894] [visor] [info] policy [default]: stopping handler instance: default-dns
[2022-01-07 10:09:53.894] [visor] [info] policy [default]: stopping handler instance: default-pcap_stats
[2022-01-07 10:09:53.894] [visor] [info] REQUEST: DELETE /api/v1/policies/default 200
[2022-01-07 10:10:05.365] [visor] [info] policy [default]: parsing
[2022-01-07 10:10:05.365] [visor] [info] policy [default]: instantiating Tap: default
[2022-01-07 10:10:05.366] [visor] [info] policy [default]: instantiating Handler net of type net
[2022-01-07 10:10:05.376] [visor] [info] policy [default]: instantiating Handler dhcp of type dhcp
[2022-01-07 10:10:05.383] [visor] [info] policy [default]: instantiating Handler dns of type dns
[2022-01-07 10:10:05.405] [visor] [info] policy [default]: instantiating Handler pcap_stats of type pcap
[2022-01-07 10:10:05.408] [visor] [info] policy [default]: starting
[2022-01-07 10:10:05.408] [visor] [info] policy [default]: starting input instance: default-default
[2022-01-07 10:10:05.450] [visor] [info] policy [default]: starting handler instance: default-net
[2022-01-07 10:10:05.450] [visor] [info] policy [default]: starting handler instance: default-dhcp
[2022-01-07 10:10:05.450] [visor] [info] policy [default]: starting handler instance: default-dns
[2022-01-07 10:10:05.450] [visor] [info] policy [default]: starting handler instance: default-pcap_stats
[2022-01-07 10:10:05.450] [visor] [info] REQUEST: POST /api/v1/policies 500
[2022-01-07 10:10:05.451] [visor] [error] {"error":"policy [default] creation failed (input): module name 'default-default' already exists"}
Segmentation fault