Bug 1579504 - Increase max-run-time for linux64-base-toolchains(-clang)/debug tasks; r=froydnj

Increase max-run-time to avoid intermittent failures due to variance in robustcheckout
performance.

Differential Revision: https://phabricator.services.mozilla.com/D45200

--HG--
extra : moz-landing-system : lando

taskcluster/ci/build/linux.yml

@@ -271,7 +271,7 @@ linux64-base-toolchains/debug:
     worker-type: b-linux
     worker:
         docker-image: {in-tree: debian7-amd64-build-base}
-        max-run-time: 5400
+        max-run-time: 7200
         env:
             PERFHERDER_EXTRA_OPTIONS: base-toolchains
             FORCE_GCC: '1'
@@ -341,7 +341,7 @@ linux64-base-toolchains-clang/debug:
     worker-type: b-linux
     worker:
         docker-image: {in-tree: debian7-amd64-build-base}
-        max-run-time: 3600
+        max-run-time: 5400
         env:
             PERFHERDER_EXTRA_OPTIONS: base-toolchains-clang
     run: