Keystore 2.0: Add globals.rs and utils.rs

These two files add some utility functions and a thread local reference
to a database connection.

Test: None
Change-Id: I34fdf977deb233571b9a0c6d50da20e47593d6a5
diff --git a/keystore2/src/lib.rs b/keystore2/src/lib.rs
index b5fef3e..7439a5b 100644
--- a/keystore2/src/lib.rs
+++ b/keystore2/src/lib.rs
@@ -16,6 +16,8 @@
 
 pub mod database;
 pub mod error;
+pub mod globals;
 /// Internal Representation of Key Parameter and convenience functions.
 pub mod key_parameter;
 pub mod permission;
+pub mod utils;