Update to 0.2.2 version of Pelion E2E python test library

- Support for testing with linux binary.
- Subscription test updated.
- Set manifest-tool's default path to working directory.
- Minor error situation improvements.

Author: teetak01

README.md

@@ -311,7 +311,7 @@ This should be verified by executing the Pelion E2E python test library tests.
 - Configure your API-key as instructed in the same README.
 - Basic tests can be then executed as:
 
-    `pytest TESTS/pelion-e2e-python-test-library/tests/dev-client-tests.py --update_bin=/home/user/mbed-os-example-pelion/mbed-os-example-pelion_update.bin --manifest_tool=/home/user/mbed-os-example-pelion`
+    `pytest TESTS/pelion-e2e-python-test-library/tests/dev-client-tests.py --update_bin=/home/user/mbed-os-example-pelion/mbed-os-example-pelion_update.bin`
 
 ## Contributing platform support
 

TESTS/pelion-e2e-python-test-library.lib

@@ -1 +1 @@
-https://github.com/ARMmbed/pelion-e2e-python-test-library/#772b9d52c34c0fa6ce42331075460e9df1560de8
+https://github.com/ARMmbed/pelion-e2e-python-test-library/#d2d6ab43c15f2b5ebd47c4dd56c9826006818a1f