Consolidate test files where all tests are identical (#6690)

tests/components/pid/test.esp8266.yaml

@@ -1,56 +1 @@
-esphome:
-  on_boot:
-    then:
-      - climate.pid.autotune: pid_climate
-      - climate.pid.autotune:
-          id: pid_climate
-          noiseband: 0.25
-          positive_output: 25%
-          negative_output: -25%
-      - climate.pid.set_control_parameters:
-          id: pid_climate
-          kp: 0.0
-          ki: 0.0
-          kd: 0.0
-      - climate.pid.reset_integral_term: pid_climate
-
-output:
-  - platform: slow_pwm
-    pin: 4
-    id: pid_slow_pwm
-    period: 15s
-    restart_cycle_on_state_change: false
-
-sensor:
-  - platform: template
-    id: template_sensor1
-    lambda: |-
-      if (millis() > 10000) {
-        return 42.0;
-      } else {
-        return 0.0;
-      }
-    update_interval: 60s
-
-climate:
-  - platform: pid
-    id: pid_climate
-    name: PID Climate Controller
-    sensor: template_sensor1
-    humidity_sensor: template_sensor1
-    default_target_temperature: 21°C
-    heat_output: pid_slow_pwm
-    control_parameters:
-      kp: 0.0
-      ki: 0.0
-      kd: 0.0
-      max_integral: 0.0
-      output_averaging_samples: 1
-      derivative_averaging_samples: 1
-    deadband_parameters:
-      threshold_high: 0.4
-      threshold_low: -2.0
-      kp_multiplier: 0.0
-      ki_multiplier: 0.0
-      kd_multiplier: 0.0
-      deadband_output_averaging_samples: 1
+<<: !include common.yaml