Generating password hash using cfmctl

You can generate a NiFi password hash using the single-user-credentials cfmctl command.

Run the singe-user-credentials command.
```
bin/cfmctl single-user-credentials
```
Enter a password when prompted.
```
Enter password:
```
The property and the hash value are printed to stdout:
```
<property name="Password">$2b$10$FdOuiIvdvrcF3dG9YMSa3u7VPLXOLQUdLbJAMLBdeM4S6tbDMg322</property>
$2b$10$FdOuiIvdvrcF3dG9Y1234u7VPLXOLQUdLbJAMLB6AXQS6tbDMg322
```
Add one or the other to your loginIdentityProviders.xml override to enable single user login using the desired credentials.