PYTHON-5611 Fix python binary usage for Other Hosts (#2586)

Author: blink1073

.evergreen/generated_configs/variants.yml

@@ -9,9 +9,9 @@ buildvariants:
  batchtime: 1440
  expansions:
  VERSION: latest
- PYTHON_BINARY: /usr/bin/python3.11
  NO_EXT: "1"
  REQUIRE_FIPS: "1"
+ PYTHON_BINARY: /usr/bin/python3.11
  tags: []
  - name: other-hosts-rhel8-zseries-latest
  tasks:
@@ -22,7 +22,6 @@ buildvariants:
  batchtime: 1440
  expansions:
  VERSION: latest
- PYTHON_BINARY: /usr/bin/python3.11
  NO_EXT: "1"
  tags: []
  - name: other-hosts-rhel8-power8-latest
@@ -34,7 +33,6 @@ buildvariants:
  batchtime: 1440
  expansions:
  VERSION: latest
- PYTHON_BINARY: /usr/bin/python3.11
  NO_EXT: "1"
  tags: []
  - name: other-hosts-rhel8-arm64-latest
@@ -46,7 +44,6 @@ buildvariants:
  batchtime: 1440
  expansions:
  VERSION: latest
- PYTHON_BINARY: /usr/bin/python3.11
  NO_EXT: "1"
  tags: []
  - name: other-hosts-amazon2023-latest
@@ -58,7 +55,6 @@ buildvariants:
  batchtime: 1440
  expansions:
  VERSION: latest
- PYTHON_BINARY: /usr/bin/python3.11
  NO_EXT: "1"
  tags: [pr]
 

.evergreen/scripts/generate_config.py

@@ -470,13 +470,14 @@ def create_alternative_hosts_variants():
 
  version = "latest"
  for host_name in OTHER_HOSTS:
- # Use explicit Python 3.11 binary on the host since the default python3 is 3.9.
- expansions = dict(VERSION="latest", PYTHON_BINARY="/usr/bin/python3.11")
+ expansions = dict(VERSION="latest")
  handle_c_ext(C_EXTS[0], expansions)
  host = HOSTS[host_name]
  tags = []
  if "fips" in host_name.lower():
  expansions["REQUIRE_FIPS"] = "1"
+ # Use explicit Python 3.11 binary on the host since the default python3 is 3.9.
+ expansions["PYTHON_BINARY"] = "/usr/bin/python3.11"
  if "amazon" in host_name.lower():
  tags.append("pr")
  variants.append(