Use puppet 4 compatible mysql functions

These was introduced in 6.0.0 and is required to
support later version of puppetlabs-mysql.

Change-Id: Iddba31b559f6d30052b827967de33e0c9003b6b9

manifests/db/mysql.pp

@@ -51,7 +51,7 @@ class nova::db::mysql(
 
   ::openstacklib::db::mysql { 'nova':
     user          => $user,
-    password_hash => mysql_password($password),
+    password_hash => mysql::password($password),
     dbname        => $dbname,
     host          => $host,
     charset       => $charset,
@@ -63,7 +63,7 @@ class nova::db::mysql(
     # need for cell_v2
     ::openstacklib::db::mysql { 'nova_cell0':
       user          => $user,
-      password_hash => mysql_password($password),
+      password_hash => mysql::password($password),
       dbname        => "${dbname}_cell0",
       host          => $host,
       charset       => $charset,

manifests/db/mysql_api.pp

@@ -45,7 +45,7 @@ class nova::db::mysql_api(
 
   ::openstacklib::db::mysql { 'nova_api':
     user          => $user,
-    password_hash => mysql_password($password),
+    password_hash => mysql::password($password),
     dbname        => $dbname,
     host          => $host,
     charset       => $charset,

manifests/db/mysql_placement.pp

@@ -45,7 +45,7 @@ class nova::db::mysql_placement(
 
   ::openstacklib::db::mysql { 'nova_placement':
     user          => $user,
-    password_hash => mysql_password($password),
+    password_hash => mysql::password($password),
     dbname        => $dbname,
     host          => $host,
     charset       => $charset,

metadata.json

@@ -33,6 +33,10 @@
             "name": "puppetlabs/rabbitmq",
             "version_requirement": ">=8.4.0 <9.0.0"
         },
+        {
+            "name": "puppetlabs/mysql",
+            "version_requirement": ">=6.0.0 <9.0.0"
+        },
         {
             "name": "puppetlabs/stdlib",
             "version_requirement": ">=5.0.0 <6.0.0"

releasenotes/notes/puppet4-mysql-func-cb910313316f65ed.yaml

@@ -0,0 +1,4 @@
+---
+upgrade:
+  - |
+    This module now requires a puppetlabs-mysql version >= 6.0.0