Update to icetea 1.* version

Olli-Pekka Puolitaival · Olli-Pekka Puolitaival · commit b41d21559717 · 2018-08-31T11:56:52.000+03:00
diff --git a/requirements.txt b/requirements.txt
@@ -17,4 +17,4 @@ future>=0.16.0
 six>=1.11.0
 git+https://github.com/armmbed/manifest-tool.git@v1.4.5
 mbed-cloud-sdk==2.0.0
-icetea==1.0.*
+icetea==1.*
