#91 solace_up metric contains more information and is less fast faili…

…ng (#92)

* #91 solace_up metric contains more information and is less fast failing
* #91 Add ednpoint label for solace_uip metric

Changed the metric names of rest consumer stats to be more Prometheus…

… compliant.

Added more details to the description of each metric for the rest consumer stats.

Updates in response to changes requested

Meaningful name for BridgeRemote metrics
Remove HW specific redundancy role metric

#73 Fix misleading error message

#71 Fix vpn connection stats

Fix typo

Security fix

Pkcs12 support (#68)

* added .p12 filetype to gitignore

* added additional parameters for pkcs12 support

* added additional config params for pkcs12 support.
To avoid breaking change, CertType will automatically set to PEM if not configured. This will ensure previous configurations will remain working even if  the new parameters are not defined. see line 77-81

* - "github.com/go-kit/kit/log" -> "github.com/go-kit/log" -> deprecation warning
  - added kingpin flags for pkcs12 parameters
   - added support for pkcs12 decoding and using for http.ListenAndServeTLS
   - specifying min tls version 1.2, ciphers and preferences

* moved tls logic to separate file

* fixed typo

* extended README with PKCS12 relevant configuration options/examples

Fix metric solace_up

#66 adds more metrics for spool stats