Bump Version to 1.4.2

Changes since 1.4.1

• improve build/CI-friendlyness
  • travis: switch to F32 as build-host switch to F32 & leap-15.2 changes for mock-2.0 turn off loop-devices & device-mapper on x86_64 targets because of changes in GCE
  • regressions.sh: get timeouts from disk-header to go with proper defaults for architecture
  • use configure for watchdog-default-timeout & others
  • ship sbd.pc with basic sbd build information for downstream packages to use
  • add number of commits since version-tag to build-counter

• add robustness against misconfiguration / improve documentation
  • add environment section to man-page previously just available in template-config
  • inform the user to restart the sbd service after disk-initialization
  • refuse to start if any of the configured device names is invalid
  • add handshake to sync startup/shutdown with pacemakerd Previously sbd just waited for the cib-connnection to show up/go away which isn't robust at all. The new feature needs new pacemakerd-api as counterpart. Thus build checks for presence of pacemakerd-api. To simplify downstream adoption behavior is configurable at runtime via configure-file with a build-time-configurable default.
  • refuse to start if qdevice-sync_timeout doesn't match watchdog-timeout Needed in particular as qdevice-sync_timeout delays quorum-state-update and has a default of 30s that doesn't match the 5s watchdog-timeout default.

• Fix: sbd-pacemaker: handle new no_quorum_demote + robustness against new policies added
• Fix: agent: correctly compare string values when calculating timeout
• Fix: scheduling: overhaul the whole thing
  • prevent possible lockup when format in proc changes
  • properly get and handle scheduler policy & prio
  • on SCHED_RR failing push to the max with SCHED_OTHER