Prometheus Node Exporter - v1.2.0

NOTE: Ignoring invalid network speed will be the default in 2.x
NOTE: Filesystem collector flags have been renamed. --collector.filesystem.ignored-mount-points is now --collector.filesystem.mount-points-exclude and --collector.filesystem.ignored-fs-types is now --collector.filesystem.fs-types-exclude. The old flags will be removed in 2.x.

• [CHANGE] Rename filesystem collector flags to match other collectors #2012
• [CHANGE] Make node_exporter print usage to STDOUT #2039
• [FEATURE] Add conntrack statistics metrics #1155
• [FEATURE] Add ethtool stats collector #1832
• [FEATURE] Add flag to ignore network speed if it is unknown #1989
• [FEATURE] Add tapestats collector for Linux #2044
• [FEATURE] Add nvme collector #2062
• [ENHANCEMENT] Add ErrorLog plumbing to promhttp #1887
• [ENHANCEMENT] Add more Infiniband counters #2019
• [ENHANCEMENT] netclass: retrieve interface names and filter before parsing #2033
• [ENHANCEMENT] Add time zone offset metric #2060
• [BUGFIX] Handle errors from disabled PSI subsystem #1983
• [BUGFIX] Fix panic when using backwards compatible flags #2000
• [BUGFIX] Fix wrong value for OpenBSD memory buffer cache #2015
• [BUGFIX] Only initiate collectors once #2048
• [BUGFIX] Handle small backwards jumps in CPU idle #2067