Use larger servers to run zlib tests in order to avoid memory exhaustion

JAVA-3709

Author: jyemin

.evergreen/.evg.yml

@@ -396,9 +396,6 @@ functions:
 
 # Anchors
 
-hosts: &hosts
- - rhel70-small
-
 pre:
   - func: "fetch source"
   - func: "prepare resources"
@@ -539,7 +536,10 @@ axes:
     values:
       - id: "linux"
         display_name: "Linux"
-        run_on: *hosts
+        run_on: rhel70-small
+      - id: "linux-large"
+        display_name: "Linux Large"
+        run_on: rhel70-large
       - id: "ubuntu"
         display_name: "Ubuntu 18.04"
         run_on: ubuntu1804-test
@@ -638,12 +638,14 @@ buildvariants:
 # Test packaging and other release related routines
 - name: static-checks
   display_name: "Static Checks"
-  run_on: *hosts
+  run_on: rhel70-small
   tasks:
     - name: "static-analysis"
 
 - matrix_name: "tests-zlib-compression"
-  matrix_spec: { compressor : "zlib", auth: "noauth", ssl: "nossl", jdk: "jdk8", version: ["3.6", "4.0", "4.2"], topology: "standalone", os: "linux" }
+  matrix_spec: { compressor : "zlib", auth: "noauth", ssl: "nossl", jdk: "jdk8",
+                 version: ["3.6", "4.0", "4.2"],
+                 topology: "standalone", os: "linux-large" }
   display_name: "${version} ${compressor} ${topology} ${auth} ${ssl} ${jdk} ${os} "
   tags: ["tests-variant"]
   tasks:
@@ -729,13 +731,13 @@ buildvariants:
 
 - name: plain-auth-test
   display_name: "PLAIN (LDAP) Auth test"
-  run_on: *hosts
+  run_on: rhel70-small
   tasks:
     - name: "plain-auth-test"
 
 - name: atlas-test
   display_name: "Atlas test"
-  run_on: *hosts
+  run_on: rhel70-small
   tasks:
     - name: "atlas-test"