samples, tests: fix key-duplicates in sample.yaml files

Fix few duplicate keys warnings in sample.yaml and testcase.yaml files,
this is going to enable some tests that were otherwise being
unintentionally ignored.

Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>

samples/sensor/esp32_temp_sensor/sample.yaml

@@ -3,8 +3,7 @@ sample:
   name: esp32_temp_sensor
 tests:
   sample.sensor.esp32_temp_sensor:
-    tags: sensors
-    tags: tests
+    tags: sensors tests
     filter: dt_compat_enabled("espressif,esp32-temp")
     harness: console
     harness_config:

samples/sensor/stm32_temp_sensor/sample.yaml

@@ -4,8 +4,7 @@ sample:
 tests:
   sample.sensor.stm32_temp_sensor:
     depends_on: adc
-    tags: sensors
-    tags: tests
+    tags: sensors tests
     filter: dt_compat_enabled("st,stm32-temp-cal") or dt_compat_enabled("st,stm32-temp")
     harness: console
     harness_config:

samples/subsys/mgmt/mcumgr/smp_svr/sample.yaml

@@ -31,7 +31,7 @@ tests:
     platform_allow: nrf52840dk_nrf52840 pinnacle_100_dvk mg100
     integration_platforms:
       - nrf52840dk_nrf52840
-  sample.mcumgr.smp_svr.serial:
+  sample.mcumgr.smp_svr.serial-console:
     extra_args: OVERLAY_CONFIG="overlay-serial-console.conf"
     platform_allow: nrf52840dk_nrf52840 pinnacle_100_dvk mg100
     integration_platforms:

tests/drivers/build_all/pwm/testcase.yaml

@@ -19,7 +19,7 @@ tests:
     tags: pwm_mcux_pwt
     extra_configs:
       - CONFIG_PWM_CAPTURE=y
-  drivers.pwm.mcux.ftm.build:
+  drivers.pwm.mcux.tpm.build:
     platform_allow: frdm_kw41z
     tags: pwm_mcux_tpm
   drivers.pwm.mcux.build:

tests/lib/cbprintf_package/testcase.yaml

@@ -125,8 +125,7 @@ tests:
       - CONFIG_PICOLIBC=y
 
   libraries.cbprintf_package_fp.picolibc:
-    filter: CONFIG_CPU_HAS_FPU
-    filter: CONFIG_PICOLIBC_SUPPORTED
+    filter: CONFIG_CPU_HAS_FPU and CONFIG_PICOLIBC_SUPPORTED
     tags: picolibc
     extra_configs:
       - CONFIG_CBPRINTF_FP_SUPPORT=y
@@ -153,8 +152,7 @@ tests:
       - CONFIG_PICOLIBC=y
 
   libraries.cbprintf_package_fp_cpp.picolibc:
-    filter: CONFIG_CPU_HAS_FPU
-    filter: CONFIG_PICOLIBC_SUPPORTED
+    filter: CONFIG_CPU_HAS_FPU and CONFIG_PICOLIBC_SUPPORTED
     tags: picolibc
     extra_configs:
       - CONFIG_CPLUSPLUS=y