Cliff Welch/Getty Images The Patriots gave their pass rush some much needed juice with their first free agent signing of the Mike Vrabel era. The team signed  former Boston College standout Harold Landry to a three year, $43.5 million dollar deal with $26 million guaranteed. Landry was a second round pick of the Titans in 2018. He plays edge and outside linebacker and has racked up 50.5 sacks in his…