Sdk and ndk version information will be storaged to versions.txt.
Versions.txt will be used for all provision scripts and later on it's
data will be printed to provision log.

Also script name changed to match both android sdk and ndk.

Change-Id: I3366e596f539099c3b587466d90905d0889398fe
Reviewed-by: Tony Sarajärvi <tony.sarajarvi@qt.io>