CI: Bump ansible-lint to <26

to be in sync with kolla-ansible
also add pin to ansible-core

Change-Id: Idf35af1b776d0e908fd328f0ec5eb825f1f2ca9c
Signed-off-by: Bartosz Bezak <[email protected]>

Author: bbezak

test-requirements.txt

@@ -1,4 +1,5 @@
-ansible-lint<25 # MIT
+ansible-core>=2.17,<2.19 # GPLv3
+ansible-lint<26 # MIT
 bandit!=1.6.0,>=1.1.0 # Apache-2.0
 bashate>=0.5.1 # Apache-2.0
 coverage!=4.4,>=4.0 # Apache-2.0