[api] Add outgoing connections so the device can dial Home Assistant

tests/components/api/test-outgoing-connection.esp32-idf.yaml

@@ -0,0 +1,17 @@
+packages:
+  common: !include common-base.yaml
+
+wifi:
+  ssid: MySSID
+  password: password1
+
+# Outgoing connection: the device dials Home Assistant when no client with a
+# state subscription is connected. Requires encryption so the peer is
+# verified by key.
+api:
+  encryption:
+    key: bOFFzzvfpg5DB94DuBGLXD/hMnhpDKgP9UQyBulwWVU=
+  outgoing_connection:
+    host: 192.168.1.2
+    port: 6054
+    delay: 60s

tests/components/api/test-outgoing-connection.host.yaml

@@ -0,0 +1,11 @@
+packages:
+  common: !include common-base.yaml
+
+network:
+
+# No host set: the device dials the last remembered Home Assistant address
+api:
+  encryption:
+    key: bOFFzzvfpg5DB94DuBGLXD/hMnhpDKgP9UQyBulwWVU=
+  outgoing_connection:
+    delay: 30s