Revert "Skip temporarily to revert it (#1087)"

This reverts commit caa2d9b.

Author: jeet4320

test/dlc_tests/sanity/test_pre_release.py

@@ -272,7 +272,7 @@ def _run_dependency_check_test(image, ec2_connection, processor):
 @pytest.mark.model("N/A")
 @pytest.mark.canary("Run dependency tests regularly on production images")
 @pytest.mark.parametrize("ec2_instance_type", ["c5.4xlarge"], indirect=True)
-@pytest.mark.skipif(not (is_nightly_context() or (is_canary_context() and is_time_for_canary_safety_scan())),
+@pytest.mark.skipif(not (is_nightly_context() or is_mainline_context() or (is_canary_context() and is_time_for_canary_safety_scan())),
                     reason="Do not run dependency check on PR tests. "
                            "Executing test in canaries pipeline during only a limited period of time."
                     )
@@ -283,7 +283,7 @@ def test_dependency_check_cpu(cpu, ec2_connection):
 @pytest.mark.model("N/A")
 @pytest.mark.canary("Run dependency tests regularly on production images")
 @pytest.mark.parametrize("ec2_instance_type", ["p3.2xlarge"], indirect=True)
-@pytest.mark.skipif(not (is_nightly_context() or (is_canary_context() and is_time_for_canary_safety_scan())),
+@pytest.mark.skipif(not (is_nightly_context() or is_mainline_context() or (is_canary_context() and is_time_for_canary_safety_scan())),
                     reason="Do not run dependency check on PR tests. "
                            "Executing test in canaries pipeline during only a limited period of time."
                     )