Add ssh public key to Fuel master node

This commit adds an ability to use ssh public key authentication for
the Fuel master node by uploading your ssh public key to it. The path
to the public key file can be provided in the 'config.sh' file.

Closes-Bug: #1579123
Change-Id: I93560126940457518fc4385c0518ab00c0cac01a

actions/master-node-create-and-install.sh

@@ -69,6 +69,12 @@ enable_outbound_network_for_product_vm $vm_master_ip $vm_master_username $vm_mas
 # Wait until the machine gets installed and Puppet completes its run
 wait_for_product_vm_to_install $vm_master_ip $vm_master_username $vm_master_password "$vm_master_prompt"
 
+#Add public key to authorized_keys
+if [ -e "${public_key_file}" ]; then
+  public_key=$(cat "${public_key_file}")
+  update_authorized_key $vm_master_ip $vm_master_username $vm_master_password "$vm_master_prompt" "$public_key"
+fi
+
 # Report success
 echo
 echo "Master node has been installed."

config.sh

@@ -190,3 +190,6 @@ skipfuelmenu="yes"
 
 # default cmdline parameters passed to the kernel when boot the Fuel Master node
 cmdline="initrd=initrd.img net.ifnames=0 biosdevname=0 ks=hd:sr0:/ks.cfg ip=10.20.0.2::10.20.0.1:255.255.255.0:fuel.domain.tld:eth0:off::: dns1=10.20.0.1"
+
+# If necessary uncomment and edit line below to add your public ssh key to the master node
+#public_key_file="${HOME}/.ssh/id_rsa.pub"

functions/product.sh

@@ -300,3 +300,31 @@ print_no_internet_connectivity_banner() {
     echo "#          because there is no Internet connectivity       #"
     echo "############################################################"
 }
+
+update_authorized_key() {
+    local ip=$1
+    local username=$2
+    local password=$3
+    local prompt=$4
+    local key=$5
+
+    echo -n "Adding public ssh key for '${username}' on '${ip}' node... "
+
+    result=$(
+        execute expect << ENDOFEXPECT
+        spawn ssh $ssh_options $username@$ip
+        expect "connect to host" exit
+        expect "*?assword:*"
+        send "$password\r"
+        expect "$prompt"
+        send "mkdir -p -m 0700 ~/.ssh\r"
+        expect "$prompt"
+        send "echo \"$key\" >>~/.ssh/authorized_keys\r"
+        expect "$prompt"
+        send "logout\r"
+        expect "$prompt"
+ENDOFEXPECT
+    )
+    echo "OK"
+    return 0
+}