Replace invalid chars while seeding environments

db/fixtures/development/19_environments.rb

@@ -33,7 +33,7 @@ class Gitlab::Seeder::Environments
 
       create_deployment!(
         merge_request.source_project,
-        "review/#{merge_request.source_branch}",
+        "review/#{merge_request.source_branch.gsub(/[^a-zA-Z0-9]/, '')}",
         merge_request.source_branch,
         merge_request.diff_head_sha
       )

lib/gitlab/regex.rb

@@ -43,7 +43,7 @@ module Gitlab
     end
 
     def environment_name_regex_message
-      "can contain only letters, digits, '-', '_', '/', '$', '{', '}', '.' and spaces"
+      "can contain only letters, digits, '-', '_', '/', '$', '{', '}', '.', and spaces"
     end
 
     def kubernetes_namespace_regex

spec/lib/gitlab/regex_spec.rb

@@ -20,6 +20,18 @@ describe Gitlab::Regex, lib: true do
     it { is_expected.to match('foo@bar') }
   end
 
+  describe '.environment_slug_regex' do
+    subject { described_class.environment_name_regex }
+
+    it { is_expected.to match('foo') }
+    it { is_expected.to match('foo-1') }
+    it { is_expected.to match('FOO') }
+    it { is_expected.to match('foo/1') }
+    it { is_expected.to match('foo.1') }
+    it { is_expected.not_to match('9&foo') }
+    it { is_expected.not_to match('foo-^') }
+  end
+
   describe '.environment_slug_regex' do
     subject { described_class.environment_slug_regex }