Reduce swarming priority of the ANGLE dEQP tests.

testing/buildbot/chromium.gpu.fyi.json

Index: testing/buildbot/chromium.gpu.fyi.json
diff --git a/testing/buildbot/chromium.gpu.fyi.json b/testing/buildbot/chromium.gpu.fyi.json
index 928e9b86446573bb5a0fcced0b448734c5b05c5a..672b7807fdc2e589f2a6342112557423d378d617 100644
--- a/testing/buildbot/chromium.gpu.fyi.json
+++ b/testing/buildbot/chromium.gpu.fyi.json
@@ -1690,6 +1690,8 @@
               "os": "Linux"
             }
           ],
+          "expiration": 7200,
+          "priority_adjustment": "lower",
           "shards": 4
         },
         "test": "angle_deqp_gles2_tests",
@@ -1704,6 +1706,8 @@
               "os": "Linux"
             }
           ],
+          "expiration": 7200,
+          "priority_adjustment": "lower",
           "shards": 12
         },
         "test": "angle_deqp_gles3_tests",
@@ -5372,6 +5376,8 @@
               "os": "Linux"
             }
           ],
+          "expiration": 7200,
+          "priority_adjustment": "lower",
           "shards": 4
         },
         "test": "angle_deqp_gles2_tests",
@@ -5661,6 +5667,8 @@
               "os": "Windows-2008ServerR2-SP1"
             }
           ],
+          "expiration": 7200,
+          "priority_adjustment": "lower",
           "shards": 4
         },
         "test": "angle_deqp_gles2_tests",
@@ -8098,6 +8106,8 @@
               "os": "Windows-2008ServerR2-SP1"
             }
           ],
+          "expiration": 7200,
+          "priority_adjustment": "lower",
           "shards": 4
         },
         "test": "angle_deqp_gles2_tests",
@@ -8112,6 +8122,8 @@
               "os": "Windows-2008ServerR2-SP1"
             }
           ],
+          "expiration": 7200,
+          "priority_adjustment": "lower",
           "shards": 12
         },
         "test": "angle_deqp_gles3_tests",
@@ -9095,6 +9107,8 @@
               "os": "Windows-2008ServerR2-SP1"
             }
           ],
+          "expiration": 7200,
+          "priority_adjustment": "lower",
           "shards": 4
         },
         "test": "angle_deqp_gles2_tests",