added kubernetes aliases and help functions

bashrc_overrides/kubernetes

@@ -0,0 +1,25 @@
+source <(kubectl completion bash)
+alias k="kubectl"
+alias kcontext="kubectl config use-context"
+kns() {
+  if [[ $# -eq 0 ]]; then
+    printf '%s\n' "$(kubectl config view --minify -o jsonpath='{.contexts[0].context.namespace}')"
+  else
+    local ns="${1?Namespace required}"
+    kubectl config set-context --current --namespace "$ns"
+    printf 'Switched current context to namespace: %s\n' "$ns"
+  fi
+}
+_kns_completion() {
+  local cur
+  cur=${COMP_WORDS[COMP_CWORD]}
+  COMPREPLY=( $(compgen -W "$(kubectl get namespaces -o name | sed 's|namespace/||')" -- "$cur") )
+}
+_kcontext_completion() {
+  local cur
+  cur=${COMP_WORDS[COMP_CWORD]}
+  COMPREPLY=( $(compgen -W "$(kubectl config get-contexts -o name)" -- $cur) )
+}
+complete -F __start_kubectl k
+complete -F _kns_completion kns
+complete -F _kcontext_completion kcontext