Paged results test sets hostname to `localhost` on test collection

[vashirov]

Issue Description
Paged results test module has some code outside of the test functions and fixtures:

389-ds-base/dirsrvtests/tests/suites/paged_results/paged_results_test.py

Lines 49 to 54 in 7a158c7

	OLD_HOSTNAME = socket.gethostname()
	if os.getuid() == 0:
	socket.sethostname('localhost')
	HOSTNAME = socket.gethostname()
	IP_ADDRESS = socket.gethostbyname(HOSTNAME)
	OLD_IP_ADDRESS = socket.gethostbyname(OLD_HOSTNAME)

It gets interpreted by pytest on test collection. These tests might be even skipped, but the code to change the hostname would still be executed. This leads to a situation, where certain test cases fail with:

E         ldap.SERVER_DOWN: {'result': -1, 'desc': "Can't contact LDAP server", 'ctrls': [], 'info': 'TLS: hostname does not match subjectAltName in peer certificate'}

Code like this should be in a fixture. But in this case I don't think we need to change the hostname at all.

[vashirov]

8dc61a1..a2f60b8 389-ds-base-1.4.3 -> 389-ds-base-1.4.3
b2092b8..30a91b5 389-ds-base-2.0 -> 389-ds-base-2.0
3b4044b..c1daaab 389-ds-base-2.1 -> 389-ds-base-2.1
bf43865..347aae6 389-ds-base-2.2 -> 389-ds-base-2.2
4e17fd6..a4f7633 389-ds-base-2.3 -> 389-ds-base-2.3
650dc51..50d5912 389-ds-base-2.4 -> 389-ds-base-2.4
70d35ba..68de69a 389-ds-base-2.5 -> 389-ds-base-2.5