SRE-3764 build: downgrade leap to 15.5 for 2.6

[grom72]

Leap version (minor) is defined by the pipeline lib, no need to provide full information in stage's name.
See daos-stack/pipeline-lib#512

Signed-off-by: Tomasz Gromadzki tomasz.gromadzki@hpe.com

Steps for the author:

• Commit message follows the guidelines.
• Appropriate Features or Test-tag pragmas were used.
• Appropriate Functional Test Stages were run.
• At least two positive code reviews including at least one code owner from each category referenced in the PR.
• Testing is complete. If necessary, forced-landing label added and a reason added in a comment.

After all prior steps are complete:

• Gatekeeper requested (daos-gatekeeper added as a reviewer).

[github-actions]

Errors are Unable to load ticket data
https://daosio.atlassian.net/browse/SRE-3764

[phender]

I still don't believe we want to use the daos-stack/pipeline-lib#512 change due to the potential impact to all branches.

Instead, couldn't we keep the stage name change here, but pass ' --build-arg POINT_RELEASE=.5 ' as an additionalBuildArgs to dockerfile().

In addition, we would need the ability to pass a "15.5" to buildRpm() to override the current parseSatgeInfo['distro_version'], but that's fairly easy with something like:

    Map stage_info = parseStageInfo(config)
    String target = config.get('target', stage_info['target'])
    String distro_version = config.get('distro_version', stage_info['distro_version'])
    ...
    String env_vars = ''
    env_vars = ' TARGET=' + target +
               ' DISTRO_VERSION=' + distro_version

[phender]

I recant my previous objection.

[phender]

I still don't believe we want to use the daos-stack/pipeline-lib#512 change due to the potential impact to all branches.

Instead, couldn't we keep the stage name change here, but pass ' --build-arg POINT_RELEASE=.5 ' as an additionalBuildArgs to dockerfile().

In addition, we would need the ability to pass a "15.5" to buildRpm() to override the current parseSatgeInfo['distro_version'], but that's fairly easy with something like:

    Map stage_info = parseStageInfo(config)
    String target = config.get('target', stage_info['target'])
    String distro_version = config.get('distro_version', stage_info['distro_version'])
    ...
    String env_vars = ''
    env_vars = ' TARGET=' + target +
               ' DISTRO_VERSION=' + distro_version

Please ignore. The pipeline-lib change only affects release/2.6.

[phender]

We will need to remove this first before landing