core: rename stoarge to storage

Rename error message name from stoarge to storage.
Renamed in all java and properties files where used.

Change-Id: I61f9a867d4bade3f756a9933dd6f665406c946a0
Signed-off-by: Alissa Bonas <abonas@redhat.com>
core: fix typo in error message name

Add missing "t" to "hostname" in error message name.

Change-Id: I2a13b60f0033afbd448b1893956572a27dcf3eda
Signed-off-by: Alissa Bonas <abonas@redhat.com>