Add alpine in RANGE_CLASS_BY_SCHEME

[Samk1710]

Resolves:

• Add alpine in RANGE_CLASS_BY_SCHEME #112

Also required in and is a good to have:

• Add V2 Importer for Tuxcare advisories vulnerablecode#2104

[keshav-space]

Thanks @Samk1710, please add few tests for AlpineLinuxVersionRange.

[Samk1710]

@keshav-space Done adding the tests.

Followed existing patterns of test_version_range_intdot and test_OpensslVersionRange_from_versions

Test logs:

collected 3 items                                                                                 

tests/test_version_range.py::test_AlpineLinuxVersionRange_from_versions PASSED              [ 33%]
tests/test_version_range.py::test_apk_in_RANGE_CLASS_BY_SCHEMES PASSED                      [ 66%]
tests/test_version_range.py::test_alpine_version_range_containment PASSED                   [100%]

======================================== 3 passed in 0.38s ========================================

Kindly take a look when time.

[keshav-space]

Thanks @Samk1710, LGTM!

[Samk1710]

Thanks for the review @keshav-space.