This is to suppress some valgrind warnings and consist principally in:
  1 - Not supporting connect_assisted_discovery to all PROXY based table types
  2 - Not supporting the PIVOT table type
  This temporarily until the valgrind errors/warnings are fixed

modified:
  storage/connect/ha_connect.cc
  storage/connect/mysql-test/connect/r/mysql.result
  storage/connect/mysql-test/connect/r/pivot.result
  storage/connect/mysql-test/connect/r/xcol.result
  storage/connect/mysql-test/connect/t/mysql.test
  storage/connect/mysql-test/connect/t/pivot.test
  storage/connect/mysql-test/connect/t/xcol.test