add documentation for CAA domain record support

Author: jamesottinger

docs/src/data/endpoints/domains.yaml

@@ -205,8 +205,8 @@ endpoints:
             optional: true
             description: >
               When Type=MX the hostname. When Type=CNAME the target of the
-              alias. When Type=TXT the value of the record. When Type=A or
-              AAAA the token of '[remote_addr]' will be substituted with the
+              alias. When Type=TXT or CAA the value of the record. When Type=A
+              or AAAA the token of '[remote_addr]' will be substituted with the
               IP address of the request.
             type: String
           priority:
@@ -235,6 +235,12 @@ endpoints:
             description: >
               The protocol to append to an SRV record.
             type: String
+          tag:
+            optional: true
+            description: >
+              The tag attribute for a CAA record. One of issue, issuewild,
+              iodef. Ignored on other record types.
+            type: String
           ttl:
             optional: true
             description: >

docs/src/data/objects/domainrecord.yaml

@@ -12,7 +12,7 @@ schema:
     type: String
     value: A
     description: >
-      Type of record (A/AAAA, NS, MX, CNAME, TXT, SRV).
+      Type of record (A/AAAA, NS, MX, CNAME, TXT, SRV or CAA).
   name:
     type: String
     value: sub.example.com
@@ -31,7 +31,7 @@ schema:
     filterable: true
     description: >
       When type=MX the hostname. When type=CNAME the target of the alias.
-      When type=TXT the value of the record.
+      When type=TXT or CAA the value of the record.
       When type=A or AAAA the token of '[remote_addr]' will be substituted
       with the IP address of the request.
   priority:
@@ -70,6 +70,14 @@ schema:
     optional: true
     description: >
       The protocol to append to an SRV record. Must conform to RFC2782 standards.
+  tag:
+    type: String
+    value: issue
+    editable: true
+    optional: true
+    description: >
+      The tag attribute for a CAA record. One of issue, issuewild, iodef.
+      Ignored on other record types.
   ttl_sec:
     type: Integer
     value: 86400
@@ -88,3 +96,4 @@ enums:
     CNAME: Canonical Name Record
     TXT: Text Record
     SRV: Service Record
+    CAA: Certification Authority Authorization Record