Merge pull request #13284 from LDong-Arm/move_ppp

Refactor PPP library

.astyleignore

@@ -1,6 +1,7 @@
 ^BUILD
 ^cmsis
 ^connectivity/libraries/mbed-coap
+^connectivity/libraries/ppp
 ^features/cryptocell
 ^features/FEATURE_BLE
 ^features/FEATURE_EXPERIMENTAL_API/FEATURE_PSA/TARGET_MBED_PSA_SRV
@@ -12,9 +13,6 @@
 ^features/nanostack/sal-stack-nanostack/source/Service_Libs/mdns/fnet
 ^features/nanostack/targets
 ^features/netsocket/emac-drivers
-^features/netsocket/ppp/include
-^features/netsocket/ppp/polarssl
-^features/netsocket/ppp/source
 ^storage/filesystem/fat/ChaN
 ^storage/filesystem/littlefs/littlefs/
 ^storage/filesystem/littlefsv2/littlefs/

.travis.yml

@@ -249,7 +249,7 @@ matrix:
         - sed -n '/``` cpp/,/```/{/```$/Q;/```/d;p;}' ${EVENTS}/README.md > main.cpp
         - |
           rm -r rtos/source/TARGET_CORTEX drivers/source/usb features/cellular features/netsocket features/nanostack \
-            features/lwipstack features/frameworks/greentea-client \
+            connectivity/libraries/ppp features/lwipstack features/frameworks/greentea-client \
             features/frameworks/utest features/frameworks/unity components BUILD
         - python tools/make.py -t GCC_ARM -m NUCLEO_F103RB --source=. --build=BUILD/NUCLEO_F103RB/GCC_ARM -j0
         # Run local equeue tests