Returns the path of the "phase 2" CA certificate directory if previously set.
Systems will often have a directory that contains multiple individual CA certificates which the supplicant can then add to the
verification chain. This may be used in addition to the NMSetting8021x:phase2-ca-cert property to add more CA certificates
for verifying the network to client.
| this |
the Setting8021x |
|
the "phase 2" CA certificate directory path |