Force Arduino Core 2.4.X for SSL environments

code/platformio.ini

@@ -6,7 +6,6 @@ data_dir = espurna/data
 [common]
 ; platform = espressif8266@1.6.0
 platform = espressif8266@1.5.0
-; platform = https://github.com/platformio/platform-espressif8266.git#v1.5.0
 build_flags = -g -DMQTT_MAX_PACKET_SIZE=400 ${env.ESPURNA_FLAGS}
 debug_flags = -DDEBUG_ESP_CORE -DDEBUG_ESP_SSL -DDEBUG_ESP_WIFI -DDEBUG_ESP_HTTP_CLIENT -DDEBUG_ESP_HTTP_UPDATE -DDEBUG_ESP_HTTP_SERVER -DDEBUG_ESP_UPDATER -DDEBUG_ESP_OTA -DDEBUG_TLS_MEM
 build_flags_512k = ${common.build_flags} -Wl,-Tesp8266.flash.512k0.ld
@@ -75,7 +74,7 @@ monitor_baud = 115200
 extra_scripts = ${common.extra_scripts}
 
 [env:wemos-d1mini-relayshield-ssl]
-platform = espressif8266_stage
+platform = espressif8266@1.6.0
 framework = arduino
 board = d1_mini
 lib_deps = ${common.lib_deps}
@@ -109,7 +108,7 @@ monitor_baud = 115200
 extra_scripts = ${common.extra_scripts}
 
 [env:nodemcu-lolin-ssl]
-platform = espressif8266_stage
+platform = espressif8266@1.6.0
 framework = arduino
 board = nodemcuv2
 lib_deps = ${common.lib_deps}
@@ -1644,7 +1643,7 @@ monitor_baud = 115200
 extra_scripts = ${common.extra_scripts}
 
 [env:travis03]
-platform = ${common.platform}
+platform = espressif8266@1.6.0
 framework = arduino
 board = esp12e
 lib_deps = ${common.lib_deps}