Move ceilometer to authtoken

Move ceilometer to authtoken

In ceilometer::api, use keystone::resource::authtoken to configure
keystone_authsection in the configuration file.

Some deprecations:
- ceilometer::api::identity_uri is deprecated in favor of
ceilometer::api::auth_url
- ceilometer::api::keystone_tenant is deprecated in favor of
ceilometer::api::project_name.
- ceilometer::api::keystone_user is deprecated in favor of
ceilometer::api::username.
- ceilometer::api::keystone_password is deprecated in favor of
ceilometer::api::password.

-Remove deprecated parameters

Change-Id: Iebfb4caf7d4675e17b866142292d421dcf62f63b
Related-Bug: #1604463