[FEATURE] Allow custom naming of nodes (#167)

Co-authored-by: Devin Buhl <onedr0p@users.noreply.github.com>

.config.sample.env

@@ -35,6 +35,15 @@ export BOOTSTRAP_ANSIBLE_KUBE_VIP_INTERFACE=""
 # e.g. 192.168.1.254
 export BOOTSTRAP_ANSIBLE_KUBE_VIP_ADDRESS=""
 
+
+#
+# Default prefixes for hostnames assigned by Ansible
+# These are unused on nodes where BOOTSTRAP_ANSIBLE_HOSTNAME_ is provided
+# 
+
+export BOOTSTRAP_ANSIBLE_DEFAULT_CONTROL_NODE_HOSTNAME_PREFIX="k8s-"
+export BOOTSTRAP_ANSIBLE_DEFAULT_NODE_HOSTNAME_PREFIX="k8s-"
+
 #
 # Ansible hosts - repeat this block as many times as you need,
 # incrementing the last digit on the variable name for each node
@@ -49,8 +58,11 @@ export BOOTSTRAP_ANSIBLE_SSH_USERNAME_0=""
 export BOOTSTRAP_ANSIBLE_SUDO_PASSWORD_0=""
 # Set this node as a control node (true/false)
 export BOOTSTRAP_ANSIBLE_CONTROL_NODE_0=""
+# Optionally set the hostname of the node, if set this will override the *_HOSTNAME_PREFIX vars above
+export BOOTSTRAP_ANSIBLE_HOSTNAME_0=""
 
 # export BOOTSTRAP_ANSIBLE_HOST_ADDR_1=""
 # export BOOTSTRAP_ANSIBLE_SSH_USERNAME_1=""
 # export BOOTSTRAP_ANSIBLE_SUDO_PASSWORD_1=""
 # export BOOTSTRAP_ANSIBLE_CONTROL_NODE_1=""
+# export BOOTSTRAP_ANSIBLE_HOSTNAME_1=""