Fix for galera_3nodes.galera_garbd

Check for garbd executable on different paths. If not found terminate test.

mysql-test/suite/galera_3nodes/t/galera_garbd.test

@@ -29,9 +29,33 @@
 --source include/wait_condition.inc
 
 --echo Starting garbd ...
---let $gp1 = `SELECT SUBSTR(@@wsrep_provider_options, LOCATE('base_port =', @@wsrep_provider_options) + LENGTH('base_port = '))`
---let $galera_port_1 = `SELECT SUBSTR('$gp1', 1, LOCATE(';', '$gp1') - 1)`
---exec `dirname $WSREP_PROVIDER`/../../bin/garb/garbd --address "gcomm://127.0.0.1:$galera_port_1" --group my_wsrep_cluster --options 'base_port=$galera_port_3' > $MYSQL_TMP_DIR/garbd.log 2>&1 &
+--perl
+use strict;
+use File::Basename;
+my $provider_dirname = dirname($ENV{WSREP_PROVIDER});
+# Array of possible garbd executable paths to be checked
+# base is $provider_dirname
+my @garbd_executable_search = (
+  # WSREP_PROVIDER is set in galera repository
+  ${provider_dirname}."/garb/garbd",
+  # MariaDB (PR #1147)
+  ${provider_dirname}."/../../bin/garb/garbd"
+);
+my $garbd_executable = '';
+foreach my $garbd (@garbd_executable_search) {
+  if (-f $garbd) {
+    $garbd_executable= $garbd;
+  }
+}
+if ($garbd_executable eq '') {
+  die("Didn't locate garbd\n"); 
+}
+die unless open(FILE, ">$ENV{MYSQLTEST_VARDIR}/tmp/garbd.inc");
+print FILE "--exec $garbd_executable --address \"gcomm://127.0.0.1:\$NODE_GALERAPORT_1\" --group my_wsrep_cluster --options 'base_port=\$NODE_GALERAPORT_3' > \$MYSQL_TMP_DIR/garbd.log 2>&1 &\n";
+close(FILE);
+EOF
+--source $MYSQLTEST_VARDIR/tmp/garbd.inc
+--remove_file $MYSQLTEST_VARDIR/tmp/garbd.inc
 
 --sleep 5