match plugins, add yum config

[hopkiw]

support config and related auth options in yum, matching dnf

[google-oss-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hopkiw

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Needs approval from an approver in each of these files: - ~~[OWNERS](https://github.com/GoogleCloudPlatform/artifact-registry-yum-plugin/blob/main/OWNERS)~~ [hopkiw] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[hopkiw]

/hold we will want to merge this after packaging, as it will have packaging-related updates (share the conf file)

[illfelder]

Overall this change looks good to me.

[hopkiw]

/packagebuild

[hopkiw]

dnf:

$ rpm -qpilv ./dnf-plugin-artifact-registry-dummy-g1.el8.x86_64.rpm 
Name        : dnf-plugin-artifact-registry
Epoch       : 1
Version     : dummy
Release     : g1.el8
Architecture: x86_64
Install Date: (not installed)
Group       : Unspecified
Size        : 16567
License     : ASL 2.0
Signature   : (none)
Source RPM  : dnf-plugin-artifact-registry-dummy-g1.el8.src.rpm
Build Date  : Tue 09 Mar 2021 10:08:05 PM UTC
Build Host  : inst-build-pkg-build-packages-el8-build-package-pj7w0.c.gcp-guest.internal
Relocations : (not relocatable)
URL         : https://cloud.google.com/artifact-registry
Summary     : dnf plugin for Artifact Registry
Description :
Contains a dnf plugin for authenticated access to Artifact Registry repositories.
-rw-r--r--    1 root    root                      509 Mar  9 22:07 /etc/dnf/plugins/artifact-registry.conf
-rw-r--r--    2 root    root                     2243 Mar  9 22:08 /usr/lib/python3.6/site-packages/dnf-plugins/__pycache__/artifact-registry.cpython-36.opt-1.pyc
-rw-r--r--    2 root    root                     2243 Mar  9 22:08 /usr/lib/python3.6/site-packages/dnf-plugins/__pycache__/artifact-registry.cpython-36.pyc
-rw-r--r--    1 root    root                     2457 Mar  9 22:07 /usr/lib/python3.6/site-packages/dnf-plugins/artifact-registry.py
drwxr-xr-x    2 root    root                        0 Mar  9 22:08 /usr/share/doc/dnf-plugin-artifact-registry
-rw-r--r--    1 root    root                    11358 Mar  9 22:07 /usr/share/doc/dnf-plugin-artifact-registry/LICENSE

and yum:

$ rpm -qpilv ./yum-plugin-artifact-registry-dummy-g1.el7.x86_64.rpm 
Name        : yum-plugin-artifact-registry
Epoch       : 1
Version     : dummy
Release     : g1.el7
Architecture: x86_64
Install Date: (not installed)
Group       : Unspecified
Size        : 16019
License     : ASL 2.0
Signature   : (none)
Source RPM  : yum-plugin-artifact-registry-dummy-g1.el7.src.rpm
Build Date  : Tue 09 Mar 2021 10:03:07 PM UTC
Build Host  : inst-build-pkg-build-packages-el7-build-package-70hrn.c.gcp-guest.internal
Relocations : (not relocatable)
URL         : https://cloud.google.com/artifact-registry
Summary     : Yum plugin for Artifact Registry
Description :
Contains a Yum plugin for authenticated access to Artifact Registry repositories.
-rw-r--r--    1 root    root                      509 Mar  9 22:03 /etc/yum/pluginconf.d/artifact-registry.conf
-rw-r--r--    1 root    root                     2102 Mar  9 22:03 /usr/lib/yum-plugins/artifact-registry.py
-rw-r--r--    2 root    root                     2050 Mar  9 22:03 /usr/lib/yum-plugins/artifact-registry.pyc
-rw-r--r--    2 root    root                     2050 Mar  9 22:03 /usr/lib/yum-plugins/artifact-registry.pyo
drwxr-xr-x    2 root    root                        0 Mar  9 22:03 /usr/share/doc/yum-plugin-artifact-registry-dummy
-rw-r--r--    1 root    root                    11358 Mar  9 22:03 /usr/share/doc/yum-plugin-artifact-registry-dummy/LICENSE

[illfelder]

/lgtm

[illfelder]

/lgtm

[hopkiw]

/unhold