CI: Add ip address sanity tests
Snip:
```
iproute-4.15.0-1.fc28.x86_64
:: [ 18:10:39 ] :: [ PASS ] :: Checking for the presence of iproute rpm
:: [ 18:10:39 ] :: [ PASS ] :: Checking for the presence of iproute rpm
:: [ 18:10:39 ] :: [ LOG ] :: Package versions:
:: [ 18:10:39 ] :: [ LOG ] :: Package versions:
:: [ 18:10:39 ] :: [ LOG ] :: iproute-4.15.0-1.fc28.x86_64
:: [ 18:10:39 ] :: [ LOG ] :: iproute-4.15.0-1.fc28.x86_64
:: [ 18:10:39 ] :: [ BEGIN ] :: Running 'cp ip-address-tests.py /usr/bin'
:: [ 18:10:39 ] :: [ PASS ] :: Command 'cp ip-address-tests.py /usr/bin' (Expected 0, got 0)
:: [ 18:10:39 ] :: [ PASS ] :: Command 'cp ip-address-tests.py /usr/bin' (Expected 0, got 0)
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
:: Duration: 0s
:: Duration: 0s
:: Assertions: 2 good, 0 bad
:: Assertions: 2 good, 0 bad
:: RESULT: PASS
:: RESULT: PASS
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
:: Test
:: Test
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
:: [ 18:10:39 ] :: [ LOG ] :: ip address tests
:: [ 18:10:39 ] :: [ LOG ] :: ip address tests
:: [ 18:10:39 ] :: [ BEGIN ] :: Running '/usr/bin/python3 /usr/bin/ip-address-tests.py'
test_add_address (__main__.IPAddressTests) ... ok
test_add_address_lifetime (__main__.IPAddressTests) ... ok
test_add_address_scope (__main__.IPAddressTests) ... ok
test_add_broadcast_address_label (__main__.IPAddressTests) ... ok
test_add_ipv6_address (__main__.IPAddressTests) ... ok
test_del_address (__main__.IPAddressTests) ... ok
----------------------------------------------------------------------
Ran 6 tests in 0.136s
OK
:: [ 18:10:39 ] :: [ PASS ] :: Command '/usr/bin/python3 /usr/bin/ip-address-tests.py' (Expected 0, got 0)
:: [ 18:10:39 ] :: [ PASS ] :: Command '/usr/bin/python3 /usr/bin/ip-address-tests.py' (Expected 0, got 0)
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
:: Duration: 1s
:: Duration: 1s
:: Assertions: 1 good, 0 bad
:: Assertions: 1 good, 0 bad
:: RESULT: PASS
:: RESULT: PASS
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
:: Cleanup
:: Cleanup
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
:: [ 18:10:40 ] :: [ BEGIN ] :: Running 'rm /usr/bin/ip-address-tests.py'
:: [ 18:10:40 ] :: [ PASS ] :: Command 'rm /usr/bin/ip-address-tests.py' (Expected 0, got 0)
:: [ 18:10:40 ] :: [ PASS ] :: Command 'rm /usr/bin/ip-address-tests.py' (Expected 0, got 0)
:: [ 18:10:40 ] :: [ LOG ] :: ip address tests done
:: [ 18:10:40 ] :: [ LOG ] :: ip address tests done
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
:: Duration: 0s
:: Duration: 0s
:: Assertions: 1 good, 0 bad
:: Assertions: 1 good, 0 bad
:: RESULT: PASS
:: RESULT: PASS
```
7ee9aeadb4