check_source: skip all checks for 00* packages

[kraih]

This one was requested by @coolo. All checks should be skipped for 00* packages.

[jberry-suse]

$ ./check_source.py -A ibs --dry --debug id 158592
[I] checking 158592
[I] home:eeich:branches:SUSE:SLE-15:GA/000package-groups@4 -> SUSE:SLE-15:GA/000package-groups
[I] 158592 accepted: Skipping all checks for 00* packages
[D] 158592 review not changed

vs without PR

$ ./check_source.py -A ibs --dry --debug id 158592
[I] checking 158592
[I] home:eeich:branches:SUSE:SLE-15:GA/000package-groups@4 -> SUSE:SLE-15:GA/000package-groups
[I] 158592 declined: A package submitted as 000package-groups has to build as 'Name: 000package-groups' - found Name 'None'
[D] 158592 review not changed

Assuming no other workflows surrounding 000* packages that would conflict it looks fine.

[coveralls]

Coverage decreased (-0.007%) to 30.46% when pulling d991c97 on kraih:sle_00_packages into 3bd6833 on openSUSE:master.