Updated test matrix version

Python 2 is EOL, removed from matrix.
Updated CouchDB patch versions.

Author: ricellis

.travis.yml

@@ -3,14 +3,13 @@ sudo: required
 language: python
 
 python:
-  - "2.7"
-  - "3.6"
+  - "3.8"
 
 env:
-  - ADMIN_PARTY=true COUCHDB_VERSION=2.1.1
-  - ADMIN_PARTY=false COUCHDB_VERSION=2.1.1
-  - ADMIN_PARTY=true COUCHDB_VERSION=1.7.1
-  - ADMIN_PARTY=false COUCHDB_VERSION=1.7.1
+  - ADMIN_PARTY=true COUCHDB_VERSION=2.3.1
+  - ADMIN_PARTY=false COUCHDB_VERSION=2.3.1
+  - ADMIN_PARTY=true COUCHDB_VERSION=1.7.2
+  - ADMIN_PARTY=false COUCHDB_VERSION=1.7.2
 
 services:
   - docker

Jenkinsfile

@@ -61,10 +61,9 @@ stage('Checkout'){
 }
 
 stage('Test'){
-  def py2 = '2'
   def py3 = '3'
   def axes = [:]
-  [py2, py3].each { version ->
+  [py3].each { version ->
     ['basic','cookie','iam'].each { auth ->
        axes.put("Python${version}-${auth}", {setupPythonAndTest(version, auth)})
     }