Make $pe_installer_source more flexible

This makes the peadm::install plan more flexible. Previously the
variable $pe_installer_source could point to an absolute URL directly to
the desired .tar.gz. Now it can also point to a web directory. Then
peadm will calculate the .tar.gz name and fetch it from the web
directory.

REFERENCE.md

@@ -1862,7 +1862,8 @@ Data type: `Optional[String]`
 The URL to download the Puppet Enterprise installer media from. If not
 specified, PEAdm will attempt to download PE installation media from its
 standard public source. When specified, PEAdm will download directly from the
-URL given.
+URL given. Can be an URL, that ends with a /, to a web directory that
+contains the original archives or an absolute URL to the .tar.gz archive.
 
 Default value: `undef`
 

plans/install.pp

@@ -15,7 +15,8 @@
 #   The URL to download the Puppet Enterprise installer media from. If not
 #   specified, PEAdm will attempt to download PE installation media from its
 #   standard public source. When specified, PEAdm will download directly from the
-#   URL given.
+#   URL given. Can be an URL, that ends with a /, to a web directory that
+#   contains the original archives or an absolute URL to the .tar.gz archive.
 # @param ldap_config
 #   If specified, configures PE RBAC DS with the supplied configuration hash.
 #   The parameter should be set to a valid set of connection settings as

plans/subplans/install.pp

@@ -32,7 +32,8 @@
 #   The URL to download the Puppet Enterprise installer media from. If not
 #   specified, PEAdm will attempt to download PE installation media from its
 #   standard public source. When specified, PEAdm will download directly from the
-#   URL given.
+#   URL given. Can be an URL, that ends with a /, to a web directory that
+#   contains the original archives or an absolute URL to the .tar.gz archive.
 #
 plan peadm::subplans::install (
   # Standard
@@ -229,8 +230,13 @@
   }
 
   if $pe_installer_source {
-    $pe_tarball_name = $pe_installer_source.split('/')[-1]
-    $pe_tarball_source = $pe_installer_source
+    if $pe_installer_source[-1] == '/' {
+      $pe_tarball_name   = "puppet-enterprise-${version}-${platform}.tar.gz"
+      $pe_tarball_source = "${pe_installer_source}${pe_tarball_name}"
+    } else {
+      $pe_tarball_name = $pe_installer_source.split('/')[-1]
+      $pe_tarball_source = $pe_installer_source
+    }
   } else {
     $pe_tarball_name   = "puppet-enterprise-${version}-${platform}.tar.gz"
     $pe_tarball_source = "https://s3.amazonaws.com/pe-builds/released/${version}/${pe_tarball_name}"