MDEV-7053 : WSREP_STATUS & WSREP_MEMBERSHIP I_S tables

Addendum : Renamed plugin .so file.

plugin/wsrep_info/CMakeLists.txt

 IF (WITH_WSREP)
   INCLUDE_DIRECTORIES(${CMAKE_SOURCE_DIR}/sql
                       ${CMAKE_SOURCE_DIR}/wsrep)
-  MYSQL_ADD_PLUGIN(WSREP_STATUS plugin.cc MODULE_ONLY)
+  MYSQL_ADD_PLUGIN(WSREP_INFO plugin.cc MODULE_ONLY)
 ENDIF()

plugin/wsrep_info/mysql-test/wsrep_info/suite.opt

---plugin-load-add=$WSREP_STATUS_SO
+--plugin-load-add=$WSREP_INFO_SO

plugin/wsrep_info/mysql-test/wsrep_info/suite.pm

-package My::Suite::WSREP_STATUS;
+package My::Suite::WSREP_INFO;
 use File::Basename;
 use My::Find;
 
@@ -14,7 +14,7 @@ my ($provider) = grep { -f $_ } $ENV{WSREP_PROVIDER},
 
 return "No wsrep provider library" unless -f $provider;
 
-return "No WSREP_STATUS plugin" unless $ENV{WSREP_STATUS_SO};
+return "No WSREP_INFO plugin" unless $ENV{WSREP_INFO_SO};
 
 $ENV{WSREP_PROVIDER} = $provider;
 

plugin/wsrep_info/plugin.cc

@@ -231,7 +231,7 @@ static struct st_mysql_information_schema wsrep_status_plugin=
   Plugin library descriptor
 */
 
-maria_declare_plugin(wsrep_status)
+maria_declare_plugin(wsrep_info)
 {
   MYSQL_INFORMATION_SCHEMA_PLUGIN,
   &wsrep_memb_plugin,