Configure Apache Knox authentication for PAM

In CDP Private Cloud, Cloudera Manager added a new Knox configuration, called Knox Simplified Topology Management - SSO Authentication Provider, with the following initial configuration:

role=authentication
authentication.name=ShiroProvider
authentication.param.sessionTimeout=30
authentication.param.redirectToUrl=/${GATEWAY_PATH}/knoxsso/knoxauth/login.html
authentication.param.restrictedCookies=rememberme,WWW-Authenticate
authentication.param.urls./**=authcBasic
authentication.param.main.pamRealm=org.apache.knox.gateway.shirorealm.KnoxPamRealm
authentication.param.main.pamRealm.service=login

Every change here is applied to the knoxsso topology that affects manager, homepage and cdp-proxy topologies as they are using the federation provider.

A new Knox configuration has been added for CDP Private Cloud, called Knox Simplified Topology Management - API Authentication Provider, with the following initial configuration:

role=authentication
authentication.name=ShiroProvider
authentication.param.sessionTimeout=30
authentication.param.urls./**=authcBasic
authentication.param.main.pamRealm=org.apache.knox.gateway.shirorealm.KnoxPamRealm
authentication.param.main.pamRealm.service=login

Every change here is applied to the admin, metadata, and cdp-proxy-api topologies.