Look for required tools in $PATH instead of just a handful locations.

diff --git a/src/ceph-volume/ceph_volume/util/system.py b/src/ceph-volume/ceph_volume/util/system.py
index b637f023a4..14516e1c65 100644
--- a/src/ceph-volume/ceph_volume/util/system.py
+++ b/src/ceph-volume/ceph_volume/util/system.py
@@ -33,14 +33,7 @@ def generate_uuid():
 
 def which(executable):
     """find the location of an executable"""
-    locations = (
-        '/usr/local/bin',
-        '/bin',
-        '/usr/bin',
-        '/usr/local/sbin',
-        '/usr/sbin',
-        '/sbin',
-    )
+    locations = os.getenv('PATH').split(':')
 
     for location in locations:
         executable_path = os.path.join(location, executable)
);'>
<option value='koszko' selected='selected'>koszko</option>
<option value='koszko-scripts'>koszko-scripts</option>
</select> <input type='submit' value='switch'/></form></td></tr>
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<div class='path'>path: <a href='/guix/log/?id=63b7dbc7327ba7c86781f0ceeaccf1b832219f09'>root</a>/<a href='/guix/log/tests?id=63b7dbc7327ba7c86781f0ceeaccf1b832219f09'>tests</a>/<a href='/guix/log/tests/import-utils.scm?id=63b7dbc7327ba7c86781f0ceeaccf1b832219f09'>import-utils.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/tests/import-utils.scm?id=63b7dbc7327ba7c86781f0ceeaccf1b832219f09&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2022-10-05 23:59:48 +0200'>2022-10-05</span></td><td><a href='/guix/commit/tests/import-utils.scm?id=421a87a68a992a78127e0c2f4aa2e18c731c9e63'>tests: Add new test cases for beautify-description.</a><span class='msg-avail'>...<span class='msg-tooltip'>* tests/import-utils.scm ("beautify-description: use double spacing"): Update.
("beautify-description: remove single quotes",
"beautify-description: escape @"): New tests.
</span></span></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2022-09-29 22:59:48 +0200'>2022-09-29</span></td><td><a href='/guix/commit/tests/import-utils.scm?id=61bd7bf4690329a10e0a1d3fd1425a73d1823576'>import/utils: alist-&gt;package: Include properties.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/import/utils.scm (alist-&gt;package): Process properties field in input
data and include it in the generated package.
* tests/import-utils.scm ("alist-&gt;package with properties"): New test.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>itd</td></tr>
<tr><td><span title='2021-09-01 23:41:42 +0200'>2021-09-01</span></td><td><a href='/guix/commit/tests/import-utils.scm?id=f95bdeb93a30b89c821627aa91da4ef3afaeb5af'>import: utils: Skip not found packages.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/import/utils.scm (recursive-import): Skip packages when the
package returned by 'repo-&gt;guix-package' is false.
* tests/import-utils.scm: New tests.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Sarah Morgensen</td></tr>
<tr><td><span title='2020-12-27 12:06:49 +0100'>2020-12-27</span></td><td><a href='/guix/commit/tests/import-utils.scm?id=5aae614868b8a7e3097ae70f6024352aa5c8de21'>import/utils: alist-&gt;package: Handle SPDX license names only as fallback.</a><span class='msg-avail'>...<span class='msg-tooltip'>Fixes &lt;https://bugs.gnu.org/45453&gt;.

* guix/import/utils.scm (alist-&gt;package): Find plain license names in (guix
licenses) first, and only fall back to SPDX names on error.
* tests/import-utils.scm ("alist-&gt;package with SPDX license name 1/2",
"alist-&gt;package with SPDX license name 2/2"): New tests.
</span></span></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2020-12-02 22:09:23 +0100'>2020-12-02</span></td><td><a href='/guix/commit/tests/import-utils.scm?id=bea3b17739fc591b8cf6db1f8d28a6f6c9585577'>import: utils: 'recursive-import' accepts an optional version parameter.</a><span class='msg-avail'>...<span class='msg-tooltip'>This adds a key VERSION to 'recursive-import' and moves the parameter REPO to
a key. This also changes all the places that rely on 'recursive-import'.

* guix/import/utils.scm (recursive-import): Add the VERSION key. Make REPO a
  key.
  (package-&gt;definition): Add optional 'append-version?'.
* guix/scripts/import/crate.scm (guix-import-crate): Add the VERSION key.
* guix/import/crate.scm (crate-&gt;guix-package): Add the VERSION key.
  (crate-recursive-import): Pass VERSION to recursive-import, remove now
  unnecessary code.
* guix/import/cran.scm (cran-&gt;guix-package, cran-recursive-import): Change the
  REPO parameter to a key.
* guix/import/elpa.scm (elpa-&gt;guix-package, elpa-recursive-import): Likewise.
* guix/import/gem.scm (gem-&gt;guix-package, recursive-import): Likewise.
* guix/import/opam.scm (opam-recurive-import): Likewise.
* guix/import/pypi.scm (pypi-recursive-import): Likewise.
* guix/import/stackage.scm (stackage-recursive-import): Likewise.
* guix/scripts/import/cran.scm (guix-import-cran): Likewise.
* guix/scripts/import/elpa.scm (guix-import-elpa): Likewise.
* tests/elpa.scm (eval-test-with-elpa): Likewise.
* tests/import-utils.scm (recursive-import): Likewise.

Co-authored-by: Hartmut Goebel &lt;h.goebel@crazy-compilers.com&gt;
</span></span></td><td>Martin Becze</td></tr>