Knoxcli.sh user-auth-test and system-user-auth-test not working with userSearchAttributeName

The user-auth-test and system-user-auth-test knoxcli.sh command do not handle configuration with userSearchAttributeName+userObjectClass+searchBase correctly. There are a number of issues.

1. If main.ldapRealm.userSearchAttributeName is present they must all be present.
2. If main.ldapRealm.userSearchAttributeName is present then main.ldapRealm.userDnTemplate must not be present.
3. If main.ldapRealm.contextFactory is present then all params "below" that in the dot notation must follow it in the topology file (e.g. main.ldapRealm.contextFactory.url, main.ldapRealm.contextFactory.systemUsername, main.ldapRealm.contextFactory.systemPassword, etc)
4. If main.ldapRealm.userSearchAttributeName is present, a missing main.ldapRealm.searchBase results in a NullPointerException at runtime.
5. If main.ldapRealm.userSearchAttributeName is present, a missing main.ldapRealm.userObjectClass results in a NullPointerException at runtime.
6. Using user-auth-test and system-user-auth-test with a valid configuration results in this error even though the same topology works at runtime. Note the misleading information about "Illegal principal name: LDAP Access". Looking at the code suggest this occurs because the search results return no results. This doesn't mean the LDAP Access principal is necessarily invalid does it?

   ~/Projects/knox-rev/install/knox-0.7.0-SNAPSHOT> bin/knoxcli.sh system-user-auth-test --cluster default --d
   Authentication failed for token submission [org.apache.shiro.authc.UsernamePasswordToken - LDAP Access, rememberMe=false].  Possible unexpected error? (Typical or expected login exceptions should extend from AuthenticationException).
   Illegal principal name: LDAP Access
   org.apache.shiro.authc.AuthenticationException: Authentication failed for token submission [org.apache.shiro.authc.UsernamePasswordToken - LDAP Access, rememberMe=false].  Possible unexpected error? (Typical or expected login exceptions should extend from AuthenticationException).
   	at org.apache.shiro.authc.AbstractAuthenticator.authenticate(AbstractAuthenticator.java:214)
   	at org.apache.shiro.mgt.AuthenticatingSecurityManager.authenticate(AuthenticatingSecurityManager.java:106)
   	at org.apache.shiro.mgt.DefaultSecurityManager.login(DefaultSecurityManager.java:270)
   	at org.apache.shiro.subject.support.DelegatingSubject.login(DelegatingSubject.java:256)
   	at org.apache.hadoop.gateway.util.KnoxCLI$LDAPCommand.authenticateUser(KnoxCLI.java:916)
   	at org.apache.hadoop.gateway.util.KnoxCLI$LDAPCommand.testSysBind(KnoxCLI.java:989)
   	at org.apache.hadoop.gateway.util.KnoxCLI$LDAPSysBindCommand.execute(KnoxCLI.java:1321)
   	at org.apache.hadoop.gateway.util.KnoxCLI.run(KnoxCLI.java:135)
   	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
   	at org.apache.hadoop.gateway.util.KnoxCLI.main(KnoxCLI.java:1516)
   	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
   	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   	at java.lang.reflect.Method.invoke(Method.java:606)
   	at org.apache.hadoop.gateway.launcher.Invoker.invokeMainMethod(Invoker.java:70)
   	at org.apache.hadoop.gateway.launcher.Invoker.invoke(Invoker.java:39)
   	at org.apache.hadoop.gateway.launcher.Command.run(Command.java:101)
   	at org.apache.hadoop.gateway.launcher.Launcher.run(Launcher.java:69)
   	at org.apache.hadoop.gateway.launcher.Launcher.main(Launcher.java:46)
   Caused by: java.lang.IllegalArgumentException: Illegal principal name: LDAP Access
   	at org.apache.hadoop.gateway.shirorealm.KnoxLdapRealm.getUserDn(KnoxLdapRealm.java:577)
   	at org.apache.shiro.realm.ldap.JndiLdapRealm.getLdapPrincipal(JndiLdapRealm.java:342)
   	at org.apache.shiro.realm.ldap.JndiLdapRealm.queryForAuthenticationInfo(JndiLdapRealm.java:371)
   	at org.apache.shiro.realm.ldap.JndiLdapRealm.doGetAuthenticationInfo(JndiLdapRealm.java:295)
   	at org.apache.hadoop.gateway.shirorealm.KnoxLdapRealm.doGetAuthenticationInfo(KnoxLdapRealm.java:177)
   	at org.apache.shiro.realm.AuthenticatingRealm.getAuthenticationInfo(AuthenticatingRealm.java:568)
   	at org.apache.shiro.authc.pam.ModularRealmAuthenticator.doSingleRealmAuthentication(ModularRealmAuthenticator.java:180)
   	at org.apache.shiro.authc.pam.ModularRealmAuthenticator.doAuthenticate(ModularRealmAuthenticator.java:267)
   	at org.apache.shiro.authc.AbstractAuthenticator.authenticate(AbstractAuthenticator.java:198)
   	... 18 more
   Unable to successfully bind to LDAP server with topology credentials