WL#7895 - Add systemd support to server.

Post push fix - Add include/have_mysqld_safe.inc

Author: thayumanavar77

mysql-test/include/have_mysqld_safe.inc

@@ -0,0 +1,30 @@
+#################################################
+# Checks if mysqld_safe is installed in the path
+# specified by MTR. mysqld_safe is obsolete on
+# platforms that use systemd to monitor mysqld.
+#################################################
+
+--disable_query_log
+--let $temp_inc=$MYSQL_TMP_DIR/tmp.inc
+let inc_tmp=$temp_inc;
+
+--perl
+use strict;
+my $is_mysqld_safe_present=0;
+$is_mysqld_safe_present=1 if -e $ENV{'MYSQLD_SAFE'};
+
+my $temp_inc= $ENV{'inc_tmp'} or die "temp_inc not set";
+open(FILE_INC, ">", "$temp_inc") or die("can't open file \"$temp_inc\": $!");
+print FILE_INC '--let $is_found= '.$is_mysqld_safe_present;
+
+EOF
+
+--source $temp_inc
+
+if (!$is_found)
+{
+--skip Tests using mysqld_safe skipped.
+}
+
+--remove_file $temp_inc
+--enable_query_log