When SimpleConfig parses a config file that has sections, such as a mysqld
config file, the values within that section are returned via a Hash. However,
we do not provide an easy way to write tests for those deep hash values:
```
describe mysql_conf('/tmp/my.cnf') do
its('mysqld.expire_logs_days') { should cmp 10 }
end
MySQL Configuration
∅ undefined method `expire_logs_days' for #<Hash:0x007fe463795a00>
```
This change provides a method-based accessor for Hashes that are built via
SimpleConfig.
```
describe mysql_conf('/tmp/my.cnf') do
its('mysqld.expire_logs_days') { should cmp 10 }
end
MySQL Configuration
✔ mysqld.expire_logs_days should cmp == 10
```
Fixes#1541 by changing the way the attributes are fetched.
Signed-off-by: Adam Leff <adam@leff.co>
