Signapk.java: hide the password

Reads the password through console instead of stdin directly and returns it as a string.

Change-Id: I52e525680b93e9729158f4902b22f985245dbf2f
Signed-off-by: zhang jun <jun.zhang@intel.com>
Signed-off-by: Mingwei Shi <mingwei.shi@intel.com>
1 file changed