PYTHON-1390 - Migrate enterprise auth tests

Author: behackett

.evergreen/config.yml

@@ -1199,7 +1199,7 @@ buildvariants:
 - matrix_name: "test-linux-enterprise-auth"
   matrix_spec: {"python-version": "*", auth: "auth"}
   display_name: "Enterprise Auth Linux ${python-version}"
-  run_on: ubuntu1204-test
+  run_on: rhel62-test
   tasks:
      - name: "test-enterprise-auth"
 

.evergreen/run-enterprise-auth-tests.sh

@@ -18,6 +18,10 @@ if [ ${PLATFORM} != "Java" ]; then
         echo "Setting GSSAPI_PASS"
         export GSSAPI_PASS=${SASL_PASS}
     else
+        # BUILD-3830
+        touch ${PROJECT_DIRECTORY}/.evergreen/krb5.conf.empty
+        export KRB5_CONFIG=${PROJECT_DIRECTORY}/.evergreen/krb5.conf.empty
+
         echo "Writing keytab"
         echo ${KEYTAB_BASE64} | base64 -d > ${PROJECT_DIRECTORY}/.evergreen/drivers.keytab
         echo "Running kinit"