Exec[gitlab-ctl reconfigure] should be configurable

[LongLiveCHIEF]

It would be nice if implementors could customize the execution attributes of the gitlab-ctl reconfigure command to optimize performance of their puppet runs. For example, if a sysadmin knows the reconfigure takes 3 minutes on their system, and anything longer will be a stuck reconfig, then unfortunately they have to either kill puppet agent, or wait 7 extra minutes for the puppet agent to fail cleanly.

Most of the attributes for this exec should be parameterized to allow greater flexibility and ensure stability in various supported OS/version combination scenarios.

Existing attributes that need to be parameterized:

• [ ] command (Path may be different in some scenarios)
• [ ] timeout
• [ ] logoutput
• [ ] tries