MDEV-30849 Hashicorp Plugin: enable key version caching by default

set hashicorp_key_management_cache_version_timeout=60s by default

increase hashicorp_key_management_cache_timeout to 24h by default,
because key values should never change, but we don't want to remove
a variable for compatibility reasons

Author: vuvova

plugin/hashicorp_key_management/hashicorp_key_management_plugin.cc

@@ -343,8 +343,8 @@ static int timeout;
 static int max_retries;
 static char caching_enabled;
 static char check_kv_version;
-static long cache_timeout;
-static long cache_version_timeout;
+static long cache_timeout;              // for KEY_MAP key_info_cache
+static long cache_version_timeout;      // for VER_MAP latest_version_cache
 static char use_cache_on_timeout;
 
 static MYSQL_SYSVAR_STR(vault_ca, vault_ca,
@@ -399,7 +399,7 @@ static void cache_timeout_update (MYSQL_THD thd,
 static MYSQL_SYSVAR_LONG(cache_timeout, cache_timeout,
   PLUGIN_VAR_RQCMDARG,
   "Cache timeout for key data (in milliseconds)",
-  NULL, cache_timeout_update, 60000, 0, LONG_MAX, 1);
+  NULL, cache_timeout_update, 24*60*60*1000, 0, LONG_MAX, 1);
 
 static void
   cache_version_timeout_update (MYSQL_THD thd,
@@ -415,7 +415,7 @@ static void
 static MYSQL_SYSVAR_LONG(cache_version_timeout, cache_version_timeout,
   PLUGIN_VAR_RQCMDARG,
   "Cache timeout for key version (in milliseconds)",
-  NULL, cache_version_timeout_update, 0, 0, LONG_MAX, 1);
+  NULL, cache_version_timeout_update, 60*1000, 0, LONG_MAX, 1);
 
 static MYSQL_SYSVAR_BOOL(use_cache_on_timeout, use_cache_on_timeout,
   PLUGIN_VAR_RQCMDARG,

plugin/hashicorp_key_management/mysql-test/vault/r/hashicorp_encode.result

@@ -1,7 +1,7 @@
 SHOW GLOBAL variables LIKE "hashicorp%";
 Variable_name	Value
-hashicorp_key_management_cache_timeout	60000
-hashicorp_key_management_cache_version_timeout	0
+hashicorp_key_management_cache_timeout	86400000
+hashicorp_key_management_cache_version_timeout	60000
 hashicorp_key_management_caching_enabled	ON
 hashicorp_key_management_check_kv_version	OFF
 hashicorp_key_management_max_retries	3

plugin/hashicorp_key_management/mysql-test/vault/r/hashicorp_key_rotation_age.result

@@ -1,6 +1,6 @@
 SHOW GLOBAL variables LIKE "hashicorp%";
 Variable_name	Value
-hashicorp_key_management_cache_timeout	60000
+hashicorp_key_management_cache_timeout	86400000
 hashicorp_key_management_cache_version_timeout	0
 hashicorp_key_management_caching_enabled	ON
 hashicorp_key_management_check_kv_version	OFF