added support for secure TLS connections (#699)

* added support for secure TLS connections
on ESP32 and ESP8266 close #101

* added TLS test builds

* added documentation for TLS
fixed some some issues in the documentation

* added documentation for error code=54

platformio.ini

@@ -20,7 +20,7 @@ extra_configs =
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;Uncomment the env line corresponding to your board and modules required,              ;
 ;you can also adapt the modules by removing the corresponding lines in the env detail  ;
-; if you go to the build flag section of your env you will see that some user_config.h ;
+; if you go to the build flag section of your env you will see that some User_config.h ;
 ; parameters can be overwritten here, for example the gateway name.                    ;
 ; If you want to avoid the lost of your environments at each update you can put them   ;
 ; into a separate file called prod_env.ini, it will be automatically read by pio       ;
@@ -57,7 +57,9 @@ extra_configs =
 ;default_envs = uno-rf
 ;default_envs = uno-fastled
 ;default_envs = atmega-all
-;default_envs = test-manual-wifi
+;default_envs = manual-wifi-test
+;default_envs = esp32dev-tls-test
+;default_envs = nodemcuv2-tls-test
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;                              ENVIRONMENTS PARAMETERS                                 ;
@@ -515,7 +517,7 @@ build_flags =
   '-DGateway_Name="OpenMQTTGateway_ESP8266_RF-CC1101"'
 board_build.flash_mode = dout
 
-[env:test-manual-wifi]
+[env:manual-wifi-test]
 platform = ${com.esp8266_platform}
 board = nodemcuv2
 lib_deps =
@@ -529,6 +531,29 @@ build_flags =
   '-DGateway_Name="OpenMQTTGateway_TEST_MANUAL_WIFI"'
 board_build.flash_mode = dout
 
+[env:esp32dev-tls-test]
+platform = ${com.esp32_platform}
+board = esp32dev
+lib_deps =
+  ${com-esp.lib_deps}
+build_flags =
+  ${com-esp.build_flags}
+  '-DSECURE_CONNECTION'
+  '-DGateway_Name="OpenMQTTGateway_TEST_TLS"'
+board_build.flash_mode = dout
+
+
+[env:nodemcuv2-tls-test]
+platform = ${com.esp8266_platform}
+board = nodemcuv2
+lib_deps =
+  ${com-esp.lib_deps}
+build_flags =
+  ${com-esp.build_flags}
+  '-DSECURE_CONNECTION'
+  '-DGateway_Name="OpenMQTTGateway_TEST_TLS"'
+board_build.flash_mode = dout
+
 [env:rf-wifi-gateway]
 platform = ${com.esp8266_platform}
 board = nodemcuv2