HPCC-8723 Configmr - htpasswdFile is not set

- Correct attribute from htpasswd to htpasswdFile

Signed-off-by: Gleb Aronsky <gleb.aronsky@lexisnexis.com>
Merge pull request #3916 from garonsky/issue-8723_htpasswd_default_env_not_set

HPCC-8723 Configmr - htpasswdFile is not set

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>