Mark all main.plugin* tests as experimental on Solaris

as done in 6.0 due to bug #47146.

mysql-test/collections/default.experimental

@@ -10,7 +10,7 @@ main.lock_multi_bug38499                 # Bug#47448 2009-09-19 alik main.lock_m
 main.lock_multi_bug38691 @solaris        # Bug#47792 2009-10-02 alik main.lock_multi_bug38691 times out sporadically on Solaris 10
 main.log_tables                          # Bug#47924 2009-10-08 alik main.log_tables times out sporadically 
 main.outfile_loaddata @solaris           # Bug#46895 2010-01-20 alik Test "outfile_loaddata" fails (reproducible)
-main.plugin                              # Bug#47146 Linking problem with example plugin when dtrace enabled
+main.plugin* @solaris                    # Bug#47146 Linking problem with example plugin when dtrace enabled
 main.signal_demo3 @solaris               # Bug#47791 2010-01-20 alik Several test cases fail on Solaris with error Thread stack overrun
 main.sp @solaris                         # Bug#47791 2010-01-20 alik Several test cases fail on Solaris with error Thread stack overrun