Linode DNS Authenticator (#5302)

* Added DNS based authenticator plugin for Linode

* Added linode plugin to docs

* Added Dockerfile

* Added .gitignore and readthedocs.org.requirements.txt

* Updated default_propagation_seconds

* Updated according to changes requested

* Bump version to 0.26.0

* Advertise our packages work on Python 3.7.

certbot/plugins/disco.py

@@ -31,6 +31,7 @@ class PluginEntryPoint(object):
         "certbot-dns-dnsimple",
         "certbot-dns-dnsmadeeasy",
         "certbot-dns-google",
+        "certbot-dns-linode",
         "certbot-dns-luadns",
         "certbot-dns-nsone",
         "certbot-dns-rfc2136",

certbot/plugins/selection.py

@@ -165,7 +165,7 @@ def choose_plugin(prepared, question):
 
 noninstaller_plugins = ["webroot", "manual", "standalone", "dns-cloudflare", "dns-cloudxns",
                         "dns-digitalocean", "dns-dnsimple", "dns-dnsmadeeasy", "dns-google",
-                        "dns-luadns", "dns-nsone", "dns-rfc2136", "dns-route53"]
+                        "dns-linode", "dns-luadns", "dns-nsone", "dns-rfc2136", "dns-route53"]
 
 def record_chosen_plugins(config, plugins, auth, inst):
     "Update the config entries to reflect the plugins we actually selected."
@@ -290,6 +290,8 @@ def cli_plugin_requests(config):  # pylint: disable=too-many-branches
         req_auth = set_configurator(req_auth, "dns-dnsmadeeasy")
     if config.dns_google:
         req_auth = set_configurator(req_auth, "dns-google")
+    if config.dns_linode:
+        req_auth = set_configurator(req_auth, "dns-linode")
     if config.dns_luadns:
         req_auth = set_configurator(req_auth, "dns-luadns")
     if config.dns_nsone: