Use right variable in both get_check_runs() (#1889)

Both CheckSuite and Commit have a get_check_runs() method that allows
filtering by a string -- the original code did not check for it, and
never added it to the query string since it checked the wrong variable.
Check the right variable and re-record the replay data.

Fixes #1843

github/CheckSuite.py

@@ -193,7 +193,7 @@ class CheckSuite(github.GithubObject.CompletableGithubObject):
             url_parameters["check_name"] = check_name
         if status is not github.GithubObject.NotSet:
             url_parameters["status"] = status
-        if status is not github.GithubObject.NotSet:
+        if filter is not github.GithubObject.NotSet:
             url_parameters["filter"] = filter
         return github.PaginatedList.PaginatedList(
             github.CheckRun.CheckRun,

github/Commit.py

@@ -281,7 +281,7 @@ class Commit(github.GithubObject.CompletableGithubObject):
             url_parameters["check_name"] = check_name
         if status is not github.GithubObject.NotSet:
             url_parameters["status"] = status
-        if status is not github.GithubObject.NotSet:
+        if filter is not github.GithubObject.NotSet:
             url_parameters["filter"] = filter
         return github.PaginatedList.PaginatedList(
             github.CheckRun.CheckRun,

tests/ReplayData/CheckSuite.testGetCheckRunsFilterByFilter.txt

@@ -2,7 +2,7 @@ https
 GET
 api.github.com
 None
-/repos/dhruvmanila/pygithub-testing/check-suites/1366665055/check-runs?per_page=1
+/repos/dhruvmanila/pygithub-testing/check-suites/1366665055/check-runs?filter=all&per_page=1
 {'Accept': 'application/vnd.github.v3+json', 'Authorization': 'Basic login_and_password_removed', 'User-Agent': 'PyGithub/Python'}
 None
 200
@@ -13,7 +13,7 @@ https
 GET
 api.github.com
 None
-/repos/dhruvmanila/pygithub-testing/check-suites/1366665055/check-runs
+/repos/dhruvmanila/pygithub-testing/check-suites/1366665055/check-runs?filter=all
 {'Accept': 'application/vnd.github.v3+json', 'Authorization': 'Basic login_and_password_removed', 'User-Agent': 'PyGithub/Python'}
 None
 200