Expand Referential Integrity checks

Many attributes in IPA (e.g. manager, memberuser, managedby, ...)
are used to store DNs of linked objects in IPA (users, hosts, sudo
commands, etc.). However, when the linked objects is deleted or
renamed, the attribute pointing to it stays with the objects and
thus may create a dangling link causing issues in client software
reading the data.

Directory Server has a plugin to enforce referential integrity (RI)
by checking DEL and MODRDN operations and updating affected links.
It was already used for manager and secretary attributes and
should be expanded for the missing attributes to avoid dangling
links.

As a prerequisite, all attributes checked for RI must have pres
and eq indexes to avoid performance issues. Thus, the following
indexes are added:
  * manager (pres index only)
  * secretary (pres index only)
  * memberHost
  * memberUser
  * sourcehost
  * memberservice
  * managedby
  * memberallowcmd
  * memberdenycmd
  * ipasudorunas
  * ipasudorunasgroup

Referential Integrity plugin is updated to enforce RI for all these
attributes. Unit tests covering RI checks for all these attributes
were added as well.

Note: this update will only fix RI on one master as RI plugin does
not check replicated operations.

https://fedorahosted.org/freeipa/ticket/2866

install/share/indices.ldif

@@ -41,6 +41,7 @@ objectClass:nsIndex
 cn:manager
 nsSystemIndex:false
 nsIndexType:eq
+nsIndexType:pres
 
 dn: cn=secretary,cn=index,cn=userRoot,cn=ldbm database,cn=plugins,cn=config
 changetype: add
@@ -49,6 +50,7 @@ objectClass:nsIndex
 cn:secretary
 nsSystemIndex:false
 nsIndexType:eq
+nsIndexType:pres
 
 dn: cn=displayname,cn=index,cn=userRoot,cn=ldbm database,cn=plugins,cn=config
 changetype: add
@@ -110,3 +112,83 @@ nsSystemIndex: false
 nsIndexType: eq
 nsIndexType: pres
 
+dn: cn=memberHost,cn=index,cn=userRoot,cn=ldbm database,cn=plugins,cn=config
+changetype: add
+cn: memberHost
+ObjectClass: top
+ObjectClass: nsIndex
+nsSystemIndex: false
+nsIndexType: eq
+nsIndexType: pres
+
+dn: cn=memberUser,cn=index,cn=userRoot,cn=ldbm database,cn=plugins,cn=config
+changetype: add
+cn: memberUser
+ObjectClass: top
+ObjectClass: nsIndex
+nsSystemIndex: false
+nsIndexType: eq
+nsIndexType: pres
+
+dn: cn=sourcehost,cn=index,cn=userRoot,cn=ldbm database,cn=plugins,cn=config
+changetype: add
+cn: sourcehost
+ObjectClass: top
+ObjectClass: nsIndex
+nsSystemIndex: false
+nsIndexType: eq
+nsIndexType: pres
+
+dn: cn=memberservice,cn=index,cn=userRoot,cn=ldbm database,cn=plugins,cn=config
+changetype: add
+cn: memberservice
+ObjectClass: top
+ObjectClass: nsIndex
+nsSystemIndex: false
+nsIndexType: eq
+nsIndexType: pres
+
+dn: cn=managedby,cn=index,cn=userRoot,cn=ldbm database,cn=plugins,cn=config
+changetype: add
+cn: managedby
+ObjectClass: top
+ObjectClass: nsIndex
+nsSystemIndex: false
+nsIndexType: eq
+nsIndexType: pres
+
+dn: cn=memberallowcmd,cn=index,cn=userRoot,cn=ldbm database,cn=plugins,cn=config
+changetype: add
+cn: memberallowcmd
+ObjectClass: top
+ObjectClass: nsIndex
+nsSystemIndex: false
+nsIndexType: eq
+nsIndexType: pres
+
+dn: cn=memberdenycmd,cn=index,cn=userRoot,cn=ldbm database,cn=plugins,cn=config
+changetype: add
+cn: memberdenycmd
+ObjectClass: top
+ObjectClass: nsIndex
+nsSystemIndex: false
+nsIndexType: eq
+nsIndexType: pres
+
+dn: cn=ipasudorunas,cn=index,cn=userRoot,cn=ldbm database,cn=plugins,cn=config
+changetype: add
+cn: ipasudorunas
+ObjectClass: top
+ObjectClass: nsIndex
+nsSystemIndex: false
+nsIndexType: eq
+nsIndexType: pres
+
+dn: cn=ipasudorunasgroup,cn=index,cn=userRoot,cn=ldbm database,cn=plugins,cn=config
+changetype: add
+cn: ipasudorunasgroup
+ObjectClass: top
+ObjectClass: nsIndex
+nsSystemIndex: false
+nsIndexType: eq
+nsIndexType: pres

install/share/referint-conf.ldif

@@ -8,4 +8,30 @@ nsslapd-pluginArg7: manager
 -
 add: nsslapd-pluginArg8
 nsslapd-pluginArg8: secretary
-
+-
+add: nsslapd-pluginArg9
+nsslapd-pluginArg9: memberuser
+-
+add: nsslapd-pluginArg10
+nsslapd-pluginArg10: memberhost
+-
+add: nsslapd-pluginArg11
+nsslapd-pluginArg11: sourcehost
+-
+add: nsslapd-pluginArg12
+nsslapd-pluginArg12: memberservice
+-
+add: nsslapd-pluginArg13
+nsslapd-pluginArg13: managedby
+-
+add: nsslapd-pluginArg14
+nsslapd-pluginArg14: memberallowcmd
+-
+add: nsslapd-pluginArg15
+nsslapd-pluginArg15: memberdenycmd
+-
+add: nsslapd-pluginArg16
+nsslapd-pluginArg16: ipasudorunas
+-
+add: nsslapd-pluginArg17
+nsslapd-pluginArg17: ipasudorunasgroup