GUACAMOLE-2139: Migrate all license information to new automated format.

doc/licenses/jcommander/NOTICE

@@ -0,0 +1,8 @@
+# Name:    JCommander
+# URL:     https://jcommander.org/
+# From:    'Cédric Beust' (https://github.com/cbeust)
+# License: Apache v2.0
+#
+# --- BEGIN LICENSE FILE ---
+Copyright 2010 Cedric Beust <cedric@beust.com>
+# --- END LICENSE FILE ---

doc/licenses/jcommander/dep-coordinates.txt

@@ -0,0 +1 @@
+com.beust:jcommander:jar:*