Add support for mariadbd binary

Starting with MariaDB 10.5.2 the binary is named mariadbd
Reference: https://jira.mariadb.org/browse/MDEV-21303

amplify/ext/mysql/managers.py

@@ -174,7 +174,7 @@ class MySQLManager(ExtObjectManager):
             # break processing returning a fault-tolerant empty list
             return []
 
-        if not any('mysqld' in line for line in ps):
+        if not any('mysqld' or 'mariadbd' in line for line in ps):
             context.log.info('no mysqld processes found')
 
             # break processing returning a fault-tolerant empty list
@@ -193,7 +193,7 @@ class MySQLManager(ExtObjectManager):
                 pid, ppid, cmd = parsed  # unpack values
 
                 # match master process
-                if cmd.split(' ', 1)[0].endswith('mysqld'):
+                if cmd.split(' ', 1)[0].endswith('d'):
                     if not launch_method_supported("mysql", ppid):
                         continue
 

amplify/ext/mysql/util.py

@@ -12,7 +12,7 @@ __maintainer__ = "Mike Belov"
 __email__ = "dedm@nginx.com"
 
 
-PS_CMD = "ps xao pid,ppid,command | grep -E 'mysqld( |$)'"  # grep -P doesn't work on BSD systems
+PS_CMD = "ps xao pid,ppid,command | grep -E '(mariadb|mysql)d( |$)'"  # grep -P doesn't work on BSD systems
 PS_REGEX = re.compile(r'\s*(?P<pid>\d+)\s+(?P<ppid>\d+)\s+(?P<cmd>.+)\s*')
 
 LS_CMD = "ls -la /proc/%s/exe"