Adds more aliases to the kubectl plugin

The sources are:

Myself for kga and kgaa
@debovema for kgn
@raybotha for kpf
@DrMegavolt for kgpl

plugins/kubectl/kubectl.plugin.zsh

@@ -26,6 +26,7 @@ alias kgp='k get pods'
 alias kep='k edit pods'
 alias kdp='k describe pods'
 alias kdelp='k delete pods'
+alias kgpl='function _kgpl(){ label=$1; shift; kgp -l $label $*; };_kgpl'
 
 # Service management.
 alias kgs='k get svc'
@@ -51,6 +52,17 @@ alias kgrs='k get rs'
 alias krh='k rollout history'
 alias kru='k rollout undo'
 
+# Node management
+alias kgn='k get nodes'
+alias kdn='k describe node'
+
+# Tools for accessing all information
+alias kga='k get all'
+alias kgaa='k get all --all-namespaces'
+
+# Forward a local port to a pod
+alias kpf='k port-forward'
+
 # Logs
 alias kl='k logs'
 alias klf='k logs -f'