Enable the usage of existing 'salt-call -m' option.

Currently, the ``-m`` flag for salt-call has no effect in the loaders.
This commit allows users to specify exactly the module dirs to load
given that they follow the naming conventions for 'grains', 'runners',
'modules', 'states', etc. This is a shortcut for having to refresh cache
state when using a masterless salt-call.
allow matching on presence of a key when value is a dict
allow matching on presence of a key when value is a dict -- for grains too
Perform a 'systemctl --system daemon-reload' when needed

If a custom unit file is added to /etc/systemd/system, or the given unit
has been modified since the last time systemctl --system daemon-reload
was run, perform the daemon-reload.
Merge pull request #4235 from terminalmage/docs

Added notes on installing psutil via pip
Use helper function to build unit name

_canonical_unit_name() already appends '.service' to a non-canonical
unit name, no need to duplicate efforts here.
Remove ReST syntax from salt.utils.is_true

This function won't have its docstring parsed to be displayed in the
docs, so it doesn't need fancypants ReST directives.
Add salt.utils.test_mode

This is the first step in making "test" mode for states
case-insensitive. See #3363.
Slight docstring tweak
correct description
Merge pull request #4229 from terminalmage/issue2908

Perform a 'systemctl --system daemon-reload' when needed
added pkg/suse specific init files
update salt.spec to 0.14.0
Merge pull request #4239 from herlo/develop

update salt.spec to 0.14.0
Handle ints/floats properly in salt.utils.is_true
Make test mode case-insensitive for state module

This implements #3363 for state.sls, state.highstate, state.single, etc.
Fix exception handling
updated PKGBUILDs for 0.14.0 release
Merge pull request #4237 from terminalmage/issue3363

Add salt.utils.test_mode
Merge pull request #4238 from aboe76/develop

added pkg/suse specific init files