allow retries to be a hash

- when it is a hash, retries max count is assumed to be at hash[:max]
- when it is an integer, this is the max count (as before)

app/models/ci/build.rb

@@ -320,7 +320,8 @@ module Ci
     end
 
     def retries_max
-      self.options.to_h.fetch(:retry, 0).to_i
+      retries = self.options[:retry]
+      retries.is_a?(Hash) && retries.fetch(:max, 0) || retries || 0
     end
 
     def latest?

spec/models/ci/build_spec.rb

@@ -1472,7 +1472,7 @@ describe Ci::Build do
     end
 
     describe '#retries_max' do
-      context 'when max retries value is defined' do
+      context 'when max retries value is defined as an integer' do
         subject { create(:ci_build, options: { retry: 1 }) }
 
         it 'returns a number of configured max retries' do
@@ -1480,6 +1480,22 @@ describe Ci::Build do
         end
       end
 
+      context 'when retries value is defined as a hash' do
+        subject { create(:ci_build, options: { retry: { max: 1 } }) }
+
+        it 'returns a number of configured max retries' do
+          expect(subject.retries_max).to eq 1
+        end
+      end
+
+      context 'when retries value is defined as a hash without max key' do
+        subject { create(:ci_build, options: { retry: { something: :else } }) }
+
+        it 'returns a number of configured max retries' do
+          expect(subject.retries_max).to eq 0
+        end
+      end
+
       context 'when max retries value is not defined' do
         subject { create(:ci_build) }