Ergonomic tweaks to template configs

[bhunut-adobe]

PR Request for #425

I changed the following:

Removed Number from the sample template.

Connector-umapi.yml

• set private key path to just private.key

Connector-ldap.yml

• set page size to 1000 (Active Directory Default)
• user_username_format example to just {sAMAccountName}

User-Sync-Config.yml

• Default to FederatedID
• Tweaked the example to match with current use case
• Enable Logging by Default
• Default Invocation - Set to Process-group and Users Mapped to avoid accidentally directory dump to Admin console.

[adorton-adobe]

I like these changes. I do wonder if changing the defaults will have any unintended consequences, but I think it's OK to approve the change and test it.