events use string regular expressions

before, events expressions are stored in yaml as regular expressions.
now, they are stored as a string with an opening/closing slash. Those
are treated as regular expressions.

app/models/event_stream.rb

@@ -62,13 +62,13 @@ def self.group_and_level(event_type)
 
     group = egroups.detect do |_, value|
       GROUP_LEVELS
-        .detect { |lvl| value[lvl]&.any? { |typ| typ.kind_of?(String) && typ == event_type } }
+        .detect { |lvl| value[lvl]&.any? { |typ| !typ.starts_with?("/") && typ == event_type } }
         .tap { |level_found| level = level_found || level }
     end&.first
 
     group ||= egroups.detect do |_, value|
       GROUP_LEVELS
-        .detect { |lvl| value[lvl]&.any? { |typ| typ.kind_of?(Regexp) && typ.match(event_type) } }
+        .detect { |lvl| value[lvl]&.any? { |typ| typ.starts_with?("/") && Regexp.new(typ[1..-2]).match?(event_type) } }
         .tap { |level_found| level = level_found || level }
     end&.first
 

spec/models/ems_event_spec.rb

@@ -411,7 +411,7 @@
       end
 
       let(:provider_event) { 'SomeSpecialProviderEvent' }
-      let(:provider_regex) { /Some.+Event/ }
+      let(:provider_regex) { "/Some.+Event/" }
 
       it 'returns the provider event if configured' do
         expect(described_class.event_groups[:addition][:critical]).to include('CloneTaskEvent')