Updates an existing account by name

<account>
	<name>John Smith</name>
	<directory_user>false</directory_user>
	<full_name>John Smith</full_name>
	<email>[email protected]</email>
	<email_address>[email protected]</email_address>
	<enabled>Enabled</enabled>
	<force_password_change>true</force_password_change>
	<access_level>Full Access</access_level>
	<privilege_set>Administrator</privilege_set>
	<password>sample</password>
	<site>
		<id>-1</id>
		<name>None</name>
	</site>
	<privileges>
		<jss_objects>
			<privilege>string</privilege>
		</jss_objects>
		<jss_settings>
			<privilege>string</privilege>
		</jss_settings>
		<jss_actions>
			<privilege>string</privilege>
		</jss_actions>
		<recon>
			<privilege>string</privilege>
		</recon>
		<casper_admin>
			<privilege>string</privilege>
		</casper_admin>
		<casper_remote>
			<privilege>string</privilege>
		</casper_remote>
		<casper_imaging>
			<privilege>string</privilege>
		</casper_imaging>
	</privileges>
</account>