L #~: linting vcenter driver (#667)

Signed-off-by: Carlos Herrera <cherrera@opennebula.io>

share/hooks/vcenter/create_vcenter_net.rb

@@ -186,8 +186,8 @@ def create_pg(one_vnet, esx_host)
 
             if !vs
                 sw_name = esx_host.create_vss(sw_name,
-                                              pnics,
                                               nports,
+                                              pnics,
                                               mtu,
                                               pnics_available)
             end

src/datastore_mad/remotes/vcenter_uploader.rb

@@ -64,7 +64,7 @@ rescue StandardError => e
     STDERR.puts "Cannot upload image to datastore #{ds_id} "\
                 "Reason: \"#{e.message}\""
     if VCenterDriver::CONFIG[:debug_information]
-        STDERR.puts "#{e.backtrace}"
+        STDERR.puts e.backtrace.to_s
     end
     exit(-1)
 ensure

src/vmm_mad/remotes/lib/vcenter_driver/host.rb

@@ -1047,8 +1047,8 @@ module VCenterDriver
 
         def create_vss(
             name,
+            num_ports,
             pnics = nil,
-            num_ports = 128,
             mtu = 1500,
             pnics_available = nil
         )
@@ -1057,6 +1057,8 @@ module VCenterDriver
             hostbridge = nil
             nics = []
 
+            num_ports = 128 if num_ports.nil?
+
             if pnics
                 pnics = pnics.split(',')
                 pnics.each do |pnic|