Retrieves public key from the certificate and and stores in `pkey_path`.
`Command syntax:`
```actionscript
cellframe-node-tool cert create_pkey <cert name> <pkey path>
```
`Options:`
```actionscript
<cert name> - name of the certificate
<pkey path> - path to a pkey file
```
### Usage Example
`Command:`
```actionscript
cellframe-node-tool cert create_pkey riemann.master.pvt.0 "/"
```
`Response:`
```
Created "/" public key based on "riemann.master.pvt.0" private key.
```