change gitremote api to be same as report and upload

These changes are keeping fallback to old settings, but will allow to
run multiple git targets with different settings

tests/testresources/core/ahriman.ini

@@ -31,9 +31,15 @@ root = ../../../
 [sign]
 target =
 
+[remote-push]
+target = gitremote
+
+[remote-pull]
+target = gitremote
+
 [gitremote]
-pull_url = https://github.com/arcan1s/repository.git
 push_url = https://github.com/arcan1s/repository.git
+pull_url = https://github.com/arcan1s/repository.git
 
 [report]
 target =