[ci] Do not test nokogiri validation line numbers

They change depending on the nokogiri version, input and moon phase...

src/api/spec/controllers/webui/package_controller_spec.rb

@@ -780,8 +780,8 @@ def remove_file_post
       end
 
       it do
-        expect(flash[:error]).to eq('Error while saving the Meta file: package validation error: 1:114: FATAL: ' +
-                                    'Opening and ending tag mismatch: package line 1 and paaaaackage.')
+        expect(flash[:error]).to match(/Error while saving the Meta file: package validation error.*FATAL:/)
+        expect(flash[:error]).to match(/Opening and ending tag mismatch: package line 1 and paaaaackage\./)
       end
       it { expect(response).to have_http_status(:bad_request) }
     end

src/api/test/functional/webui/package_edit_source_test.rb

@@ -71,7 +71,7 @@ def add_file(file)
       assert_equal expected.inspect, actual.inspect
     elsif file[:expect] == :error
       flash_message_type.must_equal :alert
-      flash_message.must_equal file[:flash_message]
+      flash_message.must_have_text(file[:flash_message])
       page.must_have_text 'Add File to'
     elsif file[:expect] == :service
       flash_message.must_equal "The file '#{file[:name]}' has been successfully saved."
@@ -212,7 +212,7 @@ def test_add_invalid_special_file # spec/features/webui/packages_spec.rb
       upload_from: :local_file,
       upload_path: text_path('broken_link.xml'),
       expect: :error,
-      flash_message: "Error while creating '_link' file: link validation error: 12:1: FATAL: Extra content at the end of the document."
+      flash_message: /Error while creating '_link' file: link validation error.*FATAL: Extra content at the end of the document\./
     )
   end
 

src/api/test/functional/webui/project_controller_test.rb

@@ -363,13 +363,13 @@ def test_save_meta
     xml = "<project name='home:adrian'> <title>My Home Project</title </project>"
     page.evaluate_script("editors[0].setValue(\"#{xml}\");")
     click_button("Save")
-    find(:id, 'flash-messages').must_have_text("project validation error: 1:60: FATAL: expected '>'")
+    find(:id, 'flash-messages').must_have_text(/project validation error.*FATAL: expected '>'/)
 
     xml = "<project name='home:adrian'><title>My Home Project</title></project>"
     page.evaluate_script("editors[0].setValue(\"#{xml}\");")
     click_button("Save")
     find(:id, 'flash-messages').
-      must_have_text("project validation error: 1:0: ERROR: Expecting an element description, got nothing")
+      must_have_text(/project validation error.*ERROR: Expecting an element description, got nothing/)
 
     # Trigger data reload and verify that nothing was saved
     click_link("Meta")