[staging-intervention] Include #!/bin/bash at top of runs

Author: woojiahao

staging_intervention/tests/specs/base.yml

@@ -6,7 +6,8 @@ initialization:
       id: start
     - type: bash
       runs: |
-        declare -a names=("josh" "adam" "mary" "jane" "charlie" "kristen" "alice" "john")
+        #!/bin/bash
+        names=("josh" "adam" "mary" "jane" "charlie" "kristen" "alice" "john")
         for name in "${names[@]}"; do
           touch "$name.txt"
           git add "$name.txt"

staging_intervention/tests/specs/extra_unstaged.yml

@@ -6,6 +6,7 @@ initialization:
       id: start
     - type: bash
       runs: |
+        #!/bin/bash
         names=("josh" "adam" "mary" "jane" "charlie" "kristen" "alice" "john")
         for name in "${names[@]}"; do
           touch "$name.txt"

staging_intervention/tests/specs/missing_unstaged.yml

@@ -6,7 +6,8 @@ initialization:
       id: start
     - type: bash
       runs: |
-        declare -a names=("josh" "adam" "mary" "jane" "charlie" "kristen" "alice" "john")
+        #!/bin/bash
+        names=("josh" "adam" "mary" "jane" "charlie" "kristen" "alice" "john")
         for name in "${names[@]}"; do
           touch "$name.txt"
           git add "$name.txt"

staging_intervention/tests/specs/mixed_unstaged.yml

@@ -6,6 +6,7 @@ initialization:
       id: start
     - type: bash
       runs: |
+        #!/bin/bash
         declare -a names=("josh" "adam" "mary" "jane" "charlie" "kristen" "alice" "john")
         for name in "${names[@]}"; do
           touch "$name.txt"