Update PG version in a couple of places (#2986)

* All dockerfiles to use PG16 by default
* PGVERSION env in the test pipelines to 16.1-1 by default
* 11->14 in the dcs-pg mapping for test pipelines
* Code comments fixes

.github/workflows/install_deps.py

@@ -110,7 +110,7 @@ def install_etcd():
 
 
 def install_postgres():
-    version = os.environ.get('PGVERSION', '15.1-1')
+    version = os.environ.get('PGVERSION', '16.1-1')
     platform = {'darwin': 'osx', 'win32': 'windows-x64', 'cygwin': 'windows-x64'}[sys.platform]
     if platform == 'osx':
         return subprocess.call(['brew', 'install', 'expect', 'postgresql@{0}'.format(version.split('.')[0])])

.github/workflows/mapping.py

@@ -1 +1 @@
-versions = {'etcd': '9.6', 'etcd3': '16', 'consul': '13', 'exhibitor': '12', 'raft': '11', 'kubernetes': '15'}
+versions = {'etcd': '9.6', 'etcd3': '16', 'consul': '13', 'exhibitor': '12', 'raft': '14', 'kubernetes': '15'}

.github/workflows/run_tests.py

@@ -30,7 +30,7 @@ def main():
         unbuffer = ['timeout', '900', 'unbuffer']
     else:
         if sys.platform == 'darwin':
-            version = os.environ.get('PGVERSION', '15.1-1')
+            version = os.environ.get('PGVERSION', '16.1-1')
             path = '/usr/local/opt/postgresql@{0}/bin:.'.format(version.split('.')[0])
             unbuffer = ['unbuffer']
         else:

.github/workflows/tests.yaml

@@ -85,7 +85,7 @@ jobs:
     env:
       DCS: ${{ matrix.dcs }}
       ETCDVERSION: 3.4.23
-      PGVERSION: 15.1-1  # for windows and macos
+      PGVERSION: 16.1-1  # for windows and macos
     strategy:
       fail-fast: false
       matrix: