set $HOME if it doesnt already exist (#1571)

Author: Emily Giurleo

.evergreen/functions.sh

@@ -29,6 +29,12 @@ host_arch() {
   echo $arch
 }
 
+set_home() {
+  if test -z "$HOME"; then
+    export HOME=$(pwd)
+  fi
+}
+
 set_fcv() {
   if test -n "$FCV"; then
     mongo --eval 'assert.commandWorked(db.adminCommand( { setFeatureCompatibilityVersion: "'"$FCV"'" } ));' "$MONGODB_URI"

.evergreen/run-local-tls-tests.sh

@@ -15,6 +15,7 @@ set -o errexit  # Exit the script with error if any of the commands fail
 
 . `dirname "$0"`/functions.sh
 
+set_home
 set_fcv
 set_env_vars
 

.evergreen/run-tests-mlaunch.sh

@@ -15,6 +15,7 @@ set -o errexit  # Exit the script with error if any of the commands fail
 
 . `dirname "$0"`/functions.sh
 
+set_home
 set_fcv
 set_env_vars