(maint) Fix rubocop violations and test timeout

This commit updates new rubocop violations and increases the test timeout due
to failures on Travis.

Author: glennsarti

lib/puppet-languageserver/puppet_helper/cache.rb

@@ -82,6 +82,7 @@ def all_objects(&_block)
           end
         end
       end
+
       private
 
       # <Type of object in the file :function, :type, :class>

spec/languageserver/spec_helper.rb

@@ -24,7 +24,7 @@ def wait_for_puppet_loading
              PuppetLanguageServer::PuppetHelper.default_classes_loaded?
     sleep(1)
     interation += 1
-    next if interation < 60
+    next if interation < 90
     raise <<-ERRORMSG
             Puppet has not be initialised in time:
             functions_loaded? = #{PuppetLanguageServer::PuppetHelper.default_functions_loaded?}