Detect if num field is valid on v1.0 version.

In Android P, the version field did not get incremented properly in
all places. So if a file with a v1.0 version is found, do a further check
to verify if the num field is really valid.

Test: Verified that a file with v1.0 gets checked and the valid num field
Test: is set correctly.
Test: Verified that a file with v1.1 automatically gets num field set to
Test: valid.
Change-Id: I7f828294c833e334cad76a866bbaa1d78ac02cfb
Merged-In: I7f828294c833e334cad76a866bbaa1d78ac02cfb
(cherry picked from commit b558fe4d)