Disable JEMALLOC threading cache in DD

As recommended by @ktf to fix STFB crashing at SOR.

Author: knopers8

tasks/stfbuilder-nooutput.yaml

@@ -28,6 +28,7 @@ command:
     - O2_DETECTOR={{ detector }}
     - DATADIST_FEE_MASK={{ stfb_fee_mask }}
     - O2_PARTITION={{ environment_id }}
+    - MALLOC_CONF=tcache:false
   stdout: "{{ log_task_stdout }}"
   stderr: "{{ log_task_stderr }}"
   shell: true

tasks/stfbuilder-senderoutput.yaml

@@ -36,6 +36,7 @@ command:
     - O2_DETECTOR={{ detector }}
     - DATADIST_FEE_MASK={{ stfb_fee_mask }}
     - O2_PARTITION={{ environment_id }}
+    - MALLOC_CONF=tcache:false
   stdout: "{{ log_task_stdout }}"
   stderr: "{{ log_task_stderr }}"
   shell: true

tasks/stfbuilder.yaml

@@ -37,6 +37,7 @@ command:
     - O2_DETECTOR={{ detector }}
     - DATADIST_FEE_MASK={{ stfb_fee_mask }}
     - O2_PARTITION={{ environment_id }}
+    - MALLOC_CONF=tcache:false
   stdout: "{{ log_task_stdout }}"
   stderr: "{{ log_task_stderr }}"
   shell: true

tasks/stfsender.yaml

@@ -35,6 +35,7 @@ command:
     - UCX_DC_MAX_NUM_EPS=512   # Allow 512 peers for DC transport
     - UCX_RC_MAX_NUM_EPS=512   # Allow 512 peers for RC transport
     - O2_PARTITION={{ environment_id }}
+    - MALLOC_CONF=tcache:false
   stdout: "{{ log_task_stdout }}"
   stderr: "{{ log_task_stderr }}"
   shell: true