FEATURE: allow multiple secrets for Discourse SSO provider

This splits off the logic between SSO keys used incoming vs outgoing, it allows to far better restrict who is allowed to log in using a site.

This allows for better auditing of the SSO provider feature

test/javascripts/components/secret-value-list-test.js.es6

@@ -0,0 +1,63 @@
+import componentTest from "helpers/component-test";
+moduleForComponent("secret-value-list", { integration: true });
+
+componentTest("adding a value", {
+  template: "{{secret-value-list values=values}}",
+
+  async test(assert) {
+    this.set("values", "firstKey|FirstValue\nsecondKey|secondValue");
+
+    await fillIn(".new-value-input.key", "thirdKey");
+    await click(".add-value-btn");
+
+    assert.ok(
+      find(".values .value").length === 2,
+      "it doesn't add the value to the list if secret is missing"
+    );
+
+    await fillIn(".new-value-input.key", "");
+    await fillIn(".new-value-input.secret", "thirdValue");
+    await click(".add-value-btn");
+
+    assert.ok(
+      find(".values .value").length === 2,
+      "it doesn't add the value to the list if key is missing"
+    );
+
+    await fillIn(".new-value-input.key", "thirdKey");
+    await fillIn(".new-value-input.secret", "thirdValue");
+    await click(".add-value-btn");
+
+    assert.ok(
+      find(".values .value").length === 3,
+      "it adds the value to the list of values"
+    );
+
+    assert.deepEqual(
+      this.get("values"),
+      "firstKey|FirstValue\nsecondKey|secondValue\nthirdKey|thirdValue",
+      "it adds the value to the list of values"
+    );
+  }
+});
+
+componentTest("removing a value", {
+  template: "{{secret-value-list values=values}}",
+
+  async test(assert) {
+    this.set("values", "firstKey|FirstValue\nsecondKey|secondValue");
+
+    await click(".values .value[data-index='0'] .remove-value-btn");
+
+    assert.ok(
+      find(".values .value").length === 1,
+      "it removes the value from the list of values"
+    );
+
+    assert.equal(
+      this.get("values"),
+      "secondKey|secondValue",
+      "it removes the expected value"
+    );
+  }
+});