FIX Link root .condarc in rapids env

[mike-wendt]

This fixes an issue with gpuci-tools where gpuci_conda_retry and gpuci_retry do not see the same channel information and cause install errors. There appears to be an environment change when calling conda from these wrapper function resulting in missing channel definitions set in the root /opt/conda/.condarc. Creating a symlink in /opt/conda/envs/rapids/.condarc to the root /opt/conda/.condarc solves this issue.

Discovered while trying to complete NVIDIA/cudf#6329

[mike-wendt]

Current broken state

Example with conda info run as the user

(rapids) root@8105837774c5:/# conda info

     active environment : rapids
    active env location : /opt/conda/envs/rapids
            shell level : 1
       user config file : /root/.condarc
 populated config files : /opt/conda/.condarc
          conda version : 4.8.5
    conda-build version : not installed
         python version : 3.7.4.final.0
       virtual packages : __glibc=2.27
       base environment : /opt/conda  (writable)
           channel URLs : https://conda.anaconda.org/gpuci/linux-64
                          https://conda.anaconda.org/gpuci/noarch
                          https://conda.anaconda.org/rapidsai/linux-64
                          https://conda.anaconda.org/rapidsai/noarch
                          https://conda.anaconda.org/rapidsai-nightly/linux-64
                          https://conda.anaconda.org/rapidsai-nightly/noarch
                          https://conda.anaconda.org/conda-forge/linux-64
                          https://conda.anaconda.org/conda-forge/noarch
                          https://conda.anaconda.org/nvidia/linux-64
                          https://conda.anaconda.org/nvidia/noarch
                          https://repo.anaconda.com/pkgs/main/linux-64
                          https://repo.anaconda.com/pkgs/main/noarch
                          https://repo.anaconda.com/pkgs/r/linux-64
                          https://repo.anaconda.com/pkgs/r/noarch
          package cache : /opt/conda/pkgs
                          /root/.conda/pkgs
       envs directories : /opt/conda/envs
                          /root/.conda/envs
               platform : linux-64
             user-agent : conda/4.8.5 requests/2.22.0 CPython/3.7.4 Linux/4.4.0-177-generic ubuntu/18.04.5 glibc/2.27
                UID:GID : 0:0
             netrc file : None
           offline mode : False

Example with conda info being output by gpuci_conda_retry

This is the same for gpuci_retry

(rapids) root@8105837774c5:/# gpuci_conda_retry install ucx-py=0.16

     active environment : base
    active env location : /opt/conda/envs/rapids
            shell level : 1
       user config file : /root/.condarc
 populated config files : 
          conda version : 4.7.12
    conda-build version : 3.18.11
         python version : 3.8.6.final.0
       virtual packages : 
       base environment : /opt/conda/envs/rapids  (writable)
           channel URLs : https://repo.anaconda.com/pkgs/main/linux-64
                          https://repo.anaconda.com/pkgs/main/noarch
                          https://repo.anaconda.com/pkgs/r/linux-64
                          https://repo.anaconda.com/pkgs/r/noarch
          package cache : /opt/conda/envs/rapids/pkgs
                          /root/.conda/pkgs
       envs directories : /opt/conda/envs/rapids/envs
                          /root/.conda/envs
               platform : linux-64
             user-agent : conda/4.7.12 requests/2.24.0 CPython/3.8.6 Linux/4.4.0-177-generic ubuntu/18.04.5 glibc/2.27
                UID:GID : 0:0
             netrc file : None
           offline mode : False

Collecting package metadata (current_repodata.json): ...working... done
...

Patched state in PR

Example with gpuci_conda_retry and a symlink to the root .condarc

(rapids) root@8105837774c5:/# gpuci_conda_retry install ucx-py=0.16

     active environment : base
    active env location : /opt/conda/envs/rapids
            shell level : 1
       user config file : /root/.condarc
 populated config files : /opt/conda/envs/rapids/.condarc
          conda version : 4.7.12
    conda-build version : 3.18.11
         python version : 3.8.6.final.0
       virtual packages : 
       base environment : /opt/conda/envs/rapids  (writable)
           channel URLs : https://conda.anaconda.org/gpuci/linux-64
                          https://conda.anaconda.org/gpuci/noarch
                          https://conda.anaconda.org/rapidsai/linux-64
                          https://conda.anaconda.org/rapidsai/noarch
                          https://conda.anaconda.org/rapidsai-nightly/linux-64
                          https://conda.anaconda.org/rapidsai-nightly/noarch
                          https://conda.anaconda.org/conda-forge/linux-64
                          https://conda.anaconda.org/conda-forge/noarch
                          https://conda.anaconda.org/nvidia/linux-64
                          https://conda.anaconda.org/nvidia/noarch
                          https://repo.anaconda.com/pkgs/main/linux-64
                          https://repo.anaconda.com/pkgs/main/noarch
                          https://repo.anaconda.com/pkgs/r/linux-64
                          https://repo.anaconda.com/pkgs/r/noarch
          package cache : /opt/conda/envs/rapids/pkgs
                          /root/.conda/pkgs
       envs directories : /opt/conda/envs/rapids/envs
                          /root/.conda/envs
               platform : linux-64
             user-agent : conda/4.7.12 requests/2.24.0 CPython/3.8.6 Linux/4.4.0-177-generic ubuntu/18.04.5 glibc/2.27
                UID:GID : 0:0
             netrc file : None
           offline mode : False

Collecting package metadata (current_repodata.json): ...working... done
...

[raydouglass]

rerun tests