SERVER-21262: Add MMAPv1 longevity variant

etc/longevity.yml

@@ -258,6 +258,26 @@ tasks:
     - func: "analyze"
     - func: "destroy cluster"
 
+- name: shard_cluster_MMAPv1_test
+  depends_on:
+    - name: compile
+  exec_timeout_secs: 28800
+  commands:
+    - func: "prepare environment"
+    - func: "bring up 3 shard cluster"
+    - func: "configure mongodb cluster"
+      vars:
+        use_csrs: "false"
+    - func: "run test"
+      vars:
+        test: "ycsb-mmap"
+    - func: "make test log artifact"
+    - func: "upload log file"
+      vars:
+        test: "ycsb"
+    - func: "analyze"
+    - func: "destroy cluster"
+
 buildvariants:
 - name: linux-wt-shard
   display_name: Linux WT Shard
@@ -296,3 +316,20 @@ buildvariants:
     - name: shard_cluster_CSRS_test
     
 
+- name: linux-mmapv1-shard
+  display_name: Linux MMAPv1 Shard
+  batchtime: 10080 # 1 week
+  expansions:
+    compile_flags: -j$(grep -c ^processor /proc/cpuinfo) CC=/opt/mongodbtoolchain/bin/gcc CXX=/opt/mongodbtoolchain/bin/g++ --release
+    setup: shard
+    cluster: longevity
+    numShard: 3
+    storageEngine: mmapv1 
+
+  run_on:
+    - "linux-64-amzn-perf-longevity"
+  tasks:
+    - name: compile
+      distros:
+      - rhel55
+    - name: shard_cluster_MMAPv1_test