PYTHON-3230 Migrate to newer zSeries, POWER8, and ARM platforms (mongodb#942)

Author: ShaneHarvey

.evergreen/config.yml

@@ -1882,17 +1882,17 @@ axes:
  batchtime: 10080 # 7 days
  variables:
  python3_binary: python3
- - id: ubuntu1804-zseries
- display_name: "Ubuntu 18.04 (zSeries)"
- run_on: ubuntu1804-zseries-small
+ - id: rhel83-zseries
+ display_name: "RHEL 8.3 (zSeries)"
+ run_on: rhel83-zseries-small
  batchtime: 10080 # 7 days
- - id: ubuntu1804-power8
- display_name: "Ubuntu 18.04 (POWER8)"
- run_on: ubuntu1804-power8-small
+ - id: rhel81-power8
+ display_name: "RHEL 8.1 (POWER8)"
+ run_on: rhel81-power8-small
  batchtime: 10080 # 7 days
- - id: ubuntu1804-arm64
- display_name: "Ubuntu 18.04 (ARM64)"
- run_on: ubuntu1804-arm64-small
+ - id: rhel82-arm64
+ display_name: "RHEL 8.2 (ARM64)"
+ run_on: rhel82-arm64-small
  batchtime: 10080 # 7 days
  variables:
  libmongocrypt_url: https://s3.amazonaws.com/mciuploads/libmongocrypt/ubuntu1804-arm64/master/latest/libmongocrypt.tar.gz
@@ -2306,17 +2306,17 @@ buildvariants:
  - ".4.2"
  - ".4.0"
 
-# Test one server version (4.2) with zSeries, POWER8, and ARM.
+# Test one server version with zSeries, POWER8, and ARM.
 - matrix_name: "test-different-cpu-architectures"
  matrix_spec:
  platform:
- - ubuntu1804-zseries # Ubuntu 18 or RHEL 8.x?
- - ubuntu1804-power8 # Ubuntu 18 or RHEL 7?
- - ubuntu1804-arm64
+ - rhel83-zseries  # Added in 5.0.8 (SERVER-44074)
+ - rhel81-power8 # Added in 4.2.7 (SERVER-44072)
+ - rhel82-arm64 # Added in 4.4.2 (SERVER-48282)
  auth-ssl: "*"
  display_name: "${platform} ${auth-ssl}"
  tasks:
- - ".4.2"
+ - ".6.0"
 
 - matrix_name: "tests-python-version-ubuntu18-test-ssl"
  matrix_spec: