Split functions-common: python functions

Move Python-related functions into inc/python

Should be transparent to all callers as it is sourced from functions-common

Change-Id: I88043830cef9211b4e0baa91bfcc7a92125afa9f
diff --git a/functions b/functions
index 5b3a8ea..2f976cf 100644
--- a/functions
+++ b/functions
@@ -13,6 +13,7 @@
 # Include the common functions
 FUNC_DIR=$(cd $(dirname "${BASH_SOURCE:-$0}") && pwd)
 source ${FUNC_DIR}/functions-common
+source ${FUNC_DIR}/inc/python
 
 # Save trace setting
 XTRACE=$(set +o | grep xtrace)