Fix validation regexs (+1 squashed commit)

Squashed commits:
[f9a9315] Use : to test invalid environment name

lib/gitlab/regex.rb

@@ -96,11 +96,11 @@ module Gitlab
     end
     def environment_name_regex
-      @environment_name_regex ||= /\A[a-zA-Z0-9_\\\/\${} -]+\z/.freeze
+      @environment_name_regex ||= /\A[a-zA-Z0-9_\\\/\${}. -]+\z/.freeze
     end
     def environment_name_regex_message
-      "can contain only letters, digits, '-', '_', '/', '$', '{', '}' and spaces"
+      "can contain only letters, digits, '-', '_', '/', '$', '{', '}', '.' and spaces"
     end
   end
 end

spec/features/environments_spec.rb

@@ -150,7 +150,7 @@ feature 'Environments', feature: true do
       context 'for invalid name' do
         before do
-          fill_in('Name', with: 'name with spaces')
+          fill_in('Name', with: 'name,with,commas')
           click_on 'Save'
         end

spec/lib/ci/gitlab_ci_yaml_processor_spec.rb

@@ -790,10 +790,10 @@ module Ci
       end
       context 'is not a valid string' do
-        let(:environment) { 'production staging' }
+        let(:environment) { 'production:staging' }
         it 'raises error' do
-          expect { builds }.to raise_error("jobs:deploy_to_production environment #{Gitlab::Regex.environment_name_regex_message}")
+          expect { builds }.to raise_error("jobs:deploy_to_production:environment name #{Gitlab::Regex.environment_name_regex_message}")
         end
       end
     end

spec/models/environment_spec.rb

@@ -68,13 +68,13 @@ describe Environment, models: true do
     subject { environment.environment_type }
     it 'sets a environment type if name has multiple segments' do
-      environment.update(name: 'production/worker.gitlab.com')
+      environment.update!(name: 'production/worker.gitlab.com')
       is_expected.to eq('production')
     end
     it 'nullifies a type if it\'s a simple name' do
-      environment.update(name: 'production')
+      environment.update!(name: 'production')
       is_expected.to be_nil
     end