Vagrant: Install SCL PHP CLI and set PATH

This avoids having to set `PATH="/opt/rh/rh-php71/root/bin:$PATH" icingacli`
all the time.

.puppet/files/etc/profile.d/env.sh

@@ -1 +1,2 @@
+export PATH="/opt/rh/rh-php71/root/bin:$PATH"
 export PATH="$PATH:/usr/local/bin"

.puppet/profiles/icingaweb2_dev/manifests/init.pp

@@ -22,6 +22,7 @@ class icingaweb2_dev (
 
   # TODO(el): icinga-gui is not a icingaweb2_dev package
   package { [
+    'rh-php71-php-cli',
     'rh-php71-php-gd',
     'rh-php71-php-intl',
     'rh-php71-php-pdo',