Remove `--always-copy` >=EL7

[punkrokk]

The below two files needs the
virtualenv_opts = --always-copy line either commented out or the value removed.

This needs validation. If StackStorm/st2#4891 is merged, we can assume it's a go.

chef-stackstorm/spec/recipes/config_spec.rb

Lines 30 to 32 in 2aa543b

	[actionrunner]
	logging = /etc/st2/logging.actionrunner.conf
	virtualenv_opts = --always-copy

https://github.com/StackStorm/chef-stackstorm/blob/2aa543bbb19df1c176299aea22828d7a6e6e41a6/spec/recipes/config_spec.rb#L30:L32

[arm4b]

A little bit more context.

Per StackStorm/st2#4891 note that --always-copy flag should be removed for both EL7 and EL8 as it breaks virtualenv for pack install in these systems. However should exist for all other systems: currently EL6, U14, U16, U18.

This virtualenv_opts adjustment is automatically done by the packaging, however applying and templating custom st2.conf as it's done in chef-stackstorm breaks it.

cc @nmaludy Please check if there is a similar issue with the Puppet module or whether st2.conf templating happens there too.

[nmaludy]

@armab Doesn't appear to be an issue in the Puppet module. In Puppet we use the ini_setting resource and edit individual pieces instead of templating the whole file (for now).