Extend support for pillarenv_from_saltenv to master config

`pillarenv_from_saltenv` is already an option for minion config, this
change enables this feature on the master.

If set to `true` salt will derive the pillar environment set on the
master:

$ salt-run pillar.show_pillar saltenv=radman
my_passphrase:
    XYZ

$ sudo salt-run pillar.show_pillar saltenv=radman2
my_passphrase:
    ABC

conf/master

@@ -731,6 +731,11 @@
 # Recursively merge lists by aggregating them instead of replacing them.
 #pillar_merge_lists: False
 
+# Set this option to True to force the pillarenv to be the same as the effective
+# saltenv when running states. If pillarenv is specified this option will be
+# ignored.
+#pillarenv_from_saltenv: False
+
 # Set this option to 'True' to force a 'KeyError' to be raised whenever an
 # attempt to retrieve a named value from pillar fails. When this option is set
 # to 'False', the failed attempt returns an empty string. Default is 'False'.

doc/ref/configuration/master.rst

@@ -2530,6 +2530,27 @@ ext_pillar keys to override those from :conf_master:`pillar_roots`.
 
     ext_pillar_first: False
 
+.. conf_minion:: pillarenv_from_saltenv
+
+``pillarenv_from_saltenv``
+--------------------------
+
+Default: ``False``
+
+When set to ``True``, the :conf_master:`pillarenv` value will assume the value
+of the effective saltenv when running states. This essentially makes ``salt-run
+pillar.show_pillar saltenv=dev`` equivalent to ``salt-run pillar.show_pillar
+saltenv=dev pillarenv=dev``. If :conf_master:`pillarenv` is set on the CLI, it
+will override this option.
+
+.. code-block:: yaml
+
+    pillarenv_from_saltenv: True
+
+.. note::
+    For salt remote execution commands this option should be set in the Minion
+    configuration instead.
+
 .. conf_master:: pillar_raise_on_missing
 
 ``pillar_raise_on_missing``

salt/pillar/__init__.py

@@ -270,6 +270,9 @@ class Pillar(object):
     def __init__(self, opts, grains, minion_id, saltenv, ext=None, functions=None,
                  pillar=None, pillarenv=None, rend=None):
         self.minion_id = minion_id
+        if pillarenv is None:
+            if opts.get('pillarenv_from_saltenv', False):
+                opts['pillarenv'] = saltenv
         # Store the file_roots path so we can restore later. Issue 5449
         self.actual_file_roots = opts['file_roots']
         # use the local file client

tests/unit/pillar_test.py

@@ -24,6 +24,25 @@ import salt.pillar
 @skipIf(NO_MOCK, NO_MOCK_REASON)
 class PillarTestCase(TestCase):
 
+    @patch('salt.pillar.compile_template')
+    def test_pillarenv_from_saltenv(self, compile_template):
+        opts = {
+            'renderer': 'json',
+            'renderer_blacklist': [],
+            'renderer_whitelist': [],
+            'state_top': '',
+            'pillar_roots': ['dev', 'base'],
+            'file_roots': ['dev', 'base'],
+            'extension_modules': '',
+            'pillarenv_from_saltenv': True
+        }
+        grains = {
+            'os': 'Ubuntu',
+        }
+        pillar = salt.pillar.Pillar(opts, grains, 'mocked-minion', 'dev')
+        self.assertEqual(pillar.opts['environment'], 'dev')
+        self.assertEqual(pillar.opts['pillarenv'], 'dev')
+
     @patch('salt.pillar.compile_template')
     def test_malformed_pillar_sls(self, compile_template):
         opts = {