Add support for custom kubeconfig contexts for clusters

[teoyaomiqui]

Currently we have a contract between kubeconfig and clusters managed by airshipctl, that cluster name MUST correspond to cluster name.

For easier management I propose that we allow users to specify kubeconfig context per cluster in ClusterMap object, and adding corresponding method to ClusterMap interface in pkg/cluster/clustermap

This would allow for easier merging of kubeconfig into document set, and easier to bring external kubeconfigs to airshipctl.
Default behavior would be still to use cluster name, if context is not specified

[airshipbot]

Related Change #759763

Subject: Add support for custom kubeconfig contexts
Link: https://review.opendev.org/759763
Status: MERGED
Owner: Kostyantyn Kalynovskyi (kkalynovskyi@mirantis.com)

This change will close this issue when merged.

Approvals

Code-Review
+2 Matt McEuen
+1 srinivasa muly
+2 Dmitry Ukov
+1 Bijaya Sharma
Verified
+2 Zuul
Workflow
+1 Kostyantyn Kalynovskyi

Last Updated: 2020-11-02 20:15:03 CST

[airshipbot]

The Change that closes this issue was merged.