fix(api-types): Allow empty domain description

description is Option<String>; validator's length(min=1) fired on
Some("") the same as an actual too-short value, rejecting the empty
string devstack sends on its idempotent domain-create/update calls
with a 400. Drop the min bound, keep max=255.

Signed-off-by: Artem Goncharov <artem.goncharov@gmail.com>

Author: gtema

crates/api-types/src/v3/domain.rs

@@ -61,7 +61,7 @@ pub struct Domain {
     /// The description of the domain.
     #[cfg_attr(feature = "builder", builder(default))]
     #[serde(skip_serializing_if = "Option::is_none")]
-    #[cfg_attr(feature = "validate", validate(length(min = 1, max = 255)))]
+    #[cfg_attr(feature = "validate", validate(length(max = 255)))]
     pub description: Option<String>,
 
     /// If set to true, domain is enabled. If set to false, domain is disabled.
@@ -105,7 +105,7 @@ pub struct Domain {
 pub struct DomainCreate {
     /// The description of the domain.
     #[cfg_attr(feature = "builder", builder(default))]
-    #[cfg_attr(feature = "validate", validate(length(min = 1, max = 255)))]
+    #[cfg_attr(feature = "validate", validate(length(max = 255)))]
     #[serde(skip_serializing_if = "Option::is_none")]
     pub description: Option<String>,
 
@@ -174,7 +174,7 @@ pub struct DomainCreateRequest {
 pub struct DomainUpdate {
     /// The description of the domain.
     #[cfg_attr(feature = "builder", builder(default))]
-    #[cfg_attr(feature = "validate", validate(length(min = 1, max = 255)))]
+    #[cfg_attr(feature = "validate", validate(length(max = 255)))]
     pub description: Option<String>,
 
     /// If set to true, domain is enabled. If set to false, domain is disabled.