Invalid PEM data received for private key

[Andrey Setyaev]

Core plugin for neutron 'vmware_nsx.plugin.NsxVPlugin'.
NSXv parametrs(in section [nsxv]):
metadata_insecure = false
metadata_nova_client_cert = /etc/neutron/plugins/vmware/cert_client_matadata.crt
metadata_nova_client_priv_key = /etc/neutron/plugins/vmware/key_client_matadata.key

We get an error during the creation of subnets:

neutron net-create admin_internal_net
neutron subnet-create --format=shell --name=admin_internal_net__subnet --gateway-ip=192.168.0.1 --enable-dhcp --dns-nameserver=8.8.8.8 --tenant_id=46cdcd892c3f43dfbdd1778a943d1aa7 admin_internal_net 192.168.0.0/24

In neutron log:
RequestBad: Request https://172.16.0.249/api/2.0/services/truststore/certificate/edge-5 is Bad, response {"details":"Invalid PEM data received for private key","errorCode":2004,"moduleName":"core-services"}

In the web-ui certificate/key is loaded only if the key has a passphrase.

nsxv neutron plugin from branch: stable/mitaka
commit: fc54ad81f0508372da9ebe513fa1db83c30e6f66

NSXv 6.2.0