MINOR: acme: only accept lowercased challenge names

To comply with RFC and IANA specifications.

Discussed in haproxy/haproxy#1864

Author: oliwer

.aspell.yml

@@ -81,6 +81,7 @@ allowed:
   - http
   - https
   - httpCLF
+  - iana
   - ineffassign
   - infos
   - ioutil
@@ -97,6 +98,7 @@ allowed:
   - lifecycle
   - linter
   - linters
+  - lowercased
   - lookups
   - lts
   - makefile

models/acme_provider.go

@@ -11854,10 +11854,10 @@ definitions:
         x-nullable: true
         x-omitempty: true
       challenge:
-        description: ACME challenge type. Only HTTP-01 and DNS-01 are supported.
+        description: ACME challenge type. Only http-01 and dns-01 are supported.
         enum:
-          - HTTP-01
-          - DNS-01
+          - http-01
+          - dns-01
         type: string
       contact:
         description: Contact email for the ACME account

specification/build/haproxy_spec.yaml

@@ -22,8 +22,8 @@ acme:
       x-nullable: true
     challenge:
       type: string
-      enum: ['HTTP-01', 'DNS-01']
-      description: ACME challenge type. Only HTTP-01 and DNS-01 are supported.
+      enum: ['http-01', 'dns-01']
+      description: ACME challenge type. Only http-01 and dns-01 are supported.
     contact:
       type: string
       description: Contact email for the ACME account

specification/models/configuration/acme.yaml

@@ -97,7 +97,7 @@ func TestCreateEditDeleteAcmeProvider(t *testing.T) {
 		Name:       "ninja",
 		AccountKey: "ninja-acme.key",
 		Bits:       misc.Int64P(2048),
-		Challenge:  "HTTP-01",
+		Challenge:  "http-01",
 		Contact:    "me@example.com",
 		Curves:     "dem curves",
 		Directory:  "https://acme.ninja.com/directory",

test/acme_test.go

@@ -1013,7 +1013,7 @@ mailers localmailer1
 acme test
   contact me@example.com
   bits 4096
-  challenge HTTP-01
+  challenge http-01
   directory https://acme.example.com/directory
   keytype ECDSA
   map acme@t

test/configuration_test.go

@@ -3173,7 +3173,7 @@
         "test": {
             "contact": "me@example.com",
             "bits": 4096,
-            "challenge": "HTTP-01",
+            "challenge": "http-01",
             "directory": "https://acme.example.com/directory",
             "keytype": "ECDSA",
             "map": "acme@t"