Alpine nexus

Support alpine releases via nexus

• pending bootstrap maintenance to enable repositories
• alpine 318 / 319 / 320 must update os type in hardening_manifest.yml, e.g. alpine318-container
• at merge time, add to ACCESS_LOG_REPOS

  "alpine-317-main": "apk",
  "alpine-317-community": "apk",
  "alpine-318-main": "apk",
  "alpine-318-community": "apk",
  "alpine-319-main": "apk",
  "alpine-319-community": "apk",
  "alpine-320-main": "apk",
  "alpine-320-community": "apk",

tested:

• https://code-ib-zelda.staging.dso.mil/dsop/cgeary/alpine320/-/jobs/214583/raw
• https://code-ib-zelda.staging.dso.mil/dsop/cgeary/cga319/-/jobs/214071/raw
• https://code-ib-zelda.staging.dso.mil/dsop/cgeary/pipeline-runner-alpine/-/jobs/215138