Update mqtt broker and add auth

bathroomheater.yaml

@@ -14,7 +14,9 @@ esp8266:
 logger:
 
 mqtt:
-  broker: mqtt
+  broker: homeassistant
+  username: esphome
+  password: !secret mqtt_password
 
 dallas:
 - pin: D1

blinds.yaml

@@ -14,7 +14,9 @@ esp8266:
 logger:
 
 mqtt:
-  broker: mqtt
+  broker: homeassistant
+  username: esphome
+  password: !secret mqtt_password
   id: mqtt_client
 
 globals:

boiler.yaml

@@ -11,7 +11,9 @@ esp8266:
 logger:
 
 mqtt:
-  broker: mqtt
+  broker: homeassistant
+  username: esphome
+  password: !secret mqtt_password
 
 dallas:
 - pin: D1

ruuvi.yaml

@@ -12,7 +12,9 @@ esp32:
 logger:
 
 mqtt:
-  broker: mqtt
+  broker: homeassistant
+  username: esphome
+  password: !secret mqtt_password
 
 # Required for ruuvitag.
 esp32_ble_tracker:

wardrobe.yaml

@@ -11,7 +11,9 @@ esp8266:
 logger:
 
 mqtt:
-  broker: mqtt
+  broker: homeassistant
+  username: esphome
+  password: !secret mqtt_password
 
 dallas:
 - pin: D4