[BOLT] Add Arm's large-bolt-tests in docker-tests (#174961)

docker-tests now runs out-of-tree tests from:
- https://github.com/arm/large-bolt-tests

bolt/utils/docker-tests/Dockerfile

@@ -43,6 +43,7 @@ WORKDIR /home/bolt
 # Get sources, compile BOLT, and run test suites.
 RUN git clone --depth 1 https://github.com/llvm/llvm-project
 RUN git clone --depth 1 https://github.com/rafaelauler/bolt-tests
+RUN git clone --depth 1 https://github.com/arm/large-bolt-tests
 
 RUN mkdir build && \
     cd build && \
@@ -52,8 +53,10 @@ RUN mkdir build && \
       -DCMAKE_BUILD_TYPE=Release \
       -DLLVM_CCACHE_BUILD=ON \
       -DLLVM_ENABLE_ASSERTIONS=ON \
-      -DLLVM_EXTERNAL_PROJECTS="bolttests" \
-      -DLLVM_EXTERNAL_BOLTTESTS_SOURCE_DIR=../bolt-tests
+      -DLLVM_EXTERNAL_PROJECTS="bolttests;bolttests-arm" \
+      -DLLVM_EXTERNAL_BOLTTESTS_SOURCE_DIR=../bolt-tests \
+      -DLLVM_EXTERNAL_BOLTTESTS_ARM_SOURCE_DIR=../large-bolt-tests
 
 RUN cd build && ninja check-bolt
 RUN cd build && ninja check-large-bolt
+RUN cd build && ninja check-large-bolt-arm