[NXCM-5187] Set Hc4Provider.HTTP_CTX_KEY_REPOSITORY attribute in order to trigger Nexus SSL Trust Store

Signed-off-by: Alin Dreghiciu <adreghiciu@gmail.com>
Merge pull request #801 from sonatype/nxcm-5187-rrb-not-using-ssl

TRIVIAL: [NXCM-5187] Set Hc4Provider.HTTP_CTX_KEY_REPOSITORY attribute in order to trigger Nexus SSL Trust Store