Config on the SRX: firefly-perimeter , 12.1X47-D20.7
set system host-name vsrx1
set system root-authentication plain-text
set system services ssh root-login allow
set system services netconf sshset system login user ansible class super-user
set system login user ansible authentication plain-text-passwordset interfaces fxp0 unit 0 family inet address 192.168.0.12/24
set routing-options static route default next-hop 192.168.0.1
set security zones functional-zone management host-inbound-traffic system-services netconf
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